Sunday

April 20, 2014

April 20, 2014

Number of results: 56,304

**physics college**

A military gun is mounted on a railroad car (m = 1400 kg) as shown in the figure below There is no frictional force on the car, the track is horizontal, and the car is initially at rest. The gun then fires a shell of mass 31 kg with a velocity of 285 m/s at an angle of 35° ...
*Wednesday, October 24, 2012 at 10:13pm by Garcia*

**Physics**

When a 81.0 kg. person climbs into an 1400 kg. car, the car's springs compress vertically 1.5 cm. What will be the frequency of vibration when the car hits a bump? (Ignore damping.)
*Friday, July 26, 2013 at 5:35pm by Brett*

**Physics**

At time 9 s, a car with mass 1400 kg is lo- cated at <94m, 0 m, 30m> and has momentum <4500 kg · m/sec, 0 kg · m/sec,−3000 kg · m/sec> . The car’s momentum is not changing. At time 18 s, find the position of the car: ~d = <dx, dy, dz>
*Thursday, January 23, 2014 at 6:42pm by NADIA*

**Physics**

At time 9 s, a car with mass 1400 kg is lo- cated at <94m, 0 m, 30m> and has momentum <4500 kg · m/sec, 0 kg · m/sec,−3000 kg · m/sec> . The car’s momentum is not changing. At time 18 s, find the position of the car: ~d = <dx, dy, dz>
*Thursday, January 23, 2014 at 6:52pm by NADIA*

**physics**

An automobile can be considered to be mounted on four identical springs as far as vertical oscillations are concerned. The springs of a certain car are adjusted so that the oscillations have a frequency of 3 Hz. (a) What is the spring constant of each spring if the mass of the...
*Thursday, December 11, 2008 at 8:08pm by johnny*

**physics**

A 1400 kg car traveling at 15.5 m/s to the south collides with a 4100 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the ﬁnal velocity of the two-vehicle mass?
*Friday, April 19, 2013 at 12:00am by Anonymous*

**Physics**

A sports car of mass 1400 kg (including the driver) crosses the rounded top of a hill (radius = 93 m) at 27 m/s. 1) Determine the normal force exerted by the road on the car. 2) Determine the normal force exerted by the car on the 75 kg driver. 3) Determine the car speed at ...
*Thursday, December 3, 2009 at 10:12pm by Anonymous*

**Physics**

A sports car of mass 1400 kg (including the driver) crosses the rounded top of a hill (radius = 93 m) at 27 m/s. 1) Determine the normal force exerted by the road on the car. 2) Determine the normal force exerted by the car on the 75 kg driver. 3) Determine the car speed at ...
*Saturday, December 5, 2009 at 9:14pm by Anonymous*

**physics**

A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 350 cm2. It is filled with oil of density 740 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1400 kg at equal fluid levels? 20 OK HELP: The pressure is constant at ...
*Sunday, November 7, 2010 at 8:12pm by Taylor*

**physics**

f = sqrt(k/m) where f is the frequency, k is the spring constant of the four springs, and m is the mass of the car. => k = f²*m = (3 Hz)²*1400 kg =12600 N/m This results is the results for the total of the four springs, so for one spring we divide the answer by four: k/4 = ...
*Thursday, December 11, 2008 at 8:08pm by Christiaan*

**physics**

At what speed do a bicycle and its rider, with a combined mass of 100 kg, have the same momentum as a 1400 car traveling at 6.0 ?
*Monday, November 22, 2010 at 9:48pm by Anonymous*

**college--physics **

On vacation, your 1400 kg car pulls a 560 kg trailer away from a stoplight with an acceleration of 2.20. What is the net force exerted by the car on the trailer?What force does the trailer exert on the car? What is the net force acting on the car?
*Wednesday, September 23, 2009 at 3:18am by Mary*

**Momentum**

A 1400 kg car moving south at 11.5 m/s collides with a 2800 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.24 m/s to the north. Find the velocity of the 2800 kg car before the collision.
*Wednesday, May 16, 2012 at 6:44pm by Lui*

**physics**

A 1400 kg car takes a 50 m unbanked curve at 14 m/s. What is the size of the friction force on the car?
*Friday, October 19, 2012 at 6:11pm by Dominic *

**Physics**

How large an average force is required to stop a 1400-kg car in 5.0 s if the car’s initial speed is 25 m/s?
*Wednesday, March 12, 2014 at 12:13pm by Bola*

**physics**

A hydraulic lift has two connected pistons with cross-sectional areas 5 cm2 and 350 cm2. It is filled with oil of density 740 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1400 kg at equal fluid levels? 20 OK HELP: The pressure is constant at ...
*Sunday, November 7, 2010 at 10:12pm by Sarah*

**Physics **

In a performance test, each of two cars takes 9.4 s to accelerate from rest to 24 m/s. Car A has a mass of 1358 kg, and car B has a mass of 2014 kg. Find the net average force that acts on (a) car A and (b) car B during the test.
*Tuesday, March 22, 2011 at 3:16am by Michael*

**Physics**

What is the momentum of a two-particle system composed of a 1400 kg car moving east at 90 m/s and a second 900 kg car moving west at 95 m/s? Let east be the positive direction.
*Wednesday, December 12, 2012 at 7:50pm by Anonymous*

**physics ( please help me)**

a railroad handcar is moving along striaght, fricionless tracks. In each of the following cases the car initially has a total mass (car and contents of magniude 4.00 m/s^1. Find the final velocity of the car in each of the three cases. A) a 40.0 kg mass is thown sideways out ...
*Tuesday, April 3, 2012 at 3:48pm by taylor*

**Physics**

When four people with a combined mass of 320 kg sit down in a car, they find that the car drops 0.80 cm lower on its springs. Then they get out of the car and bounce it up and down. What is the frequency of the car's vibration if its mass (when it is empty) is 2.0 x 10^3 kg?
*Tuesday, December 7, 2010 at 9:25am by Y0gi*

**Physics**

Two cars have a head-on collision. Both were traveling at 28 m/s toward each other. Car A has a mass of 700 kg and car B has a mass of 904 kg. After the impact, what is car B's velocity?
*Sunday, November 14, 2010 at 7:01pm by Mayte*

**Dynamics of Rigid Bodies**

Two cars, A and B, are traveling along the same route. Car A is traveling at 4.5 m/s and has a mass of 1150 kg. Car B is traveling at 6.7 m/s and has a mass of 1300 kg. If car B gently bumps into car A and their bumpers lock together, what will be their common velocity then?
*Wednesday, April 10, 2013 at 6:36am by Anonymous*

**physics**

When four people with a combined mass of 320 kg sit down in a car, they find that the car drops .80 cm lower on its springs. THen they get out of the car and bounce it up and down. What is the frequency of the car's vibration if its mass (empty) is 2.0 X 10^3 kg? The spring ...
*Thursday, March 15, 2007 at 4:37pm by sam*

**Physics. PLEASE HELP!!**

A small car of mass 985 kg is parked behind a small truck of mass 1551 kg on a level road. The brakes of both the car and the truck are off so that they are free to roll with negligible friction. A 83 kg woman sitting on the tailgate of the truck shoves the car away by ...
*Saturday, April 7, 2012 at 8:42pm by Amber*

**physics**

Two cars have a head-on collision.Both were traveling at 37 m/s toward each other.Car A has a mass of 432 KG.Car B has a mass of 90 KG. After impact,car A is moving backward at 3 m/s. What car B's velocity after impact?
*Monday, November 15, 2010 at 8:03pm by Mayte*

**Physics**

Car A with mass of 1250 kg is traveling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, traveling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together and car a goes off 10 m/s to the west. What will be the ...
*Monday, January 21, 2013 at 4:55pm by Mauro Dar*

**physics**

Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will ...
*Monday, February 4, 2013 at 2:21pm by william mclaren*

**physics**

Car A with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. assume these two vehicles experience an inelastic collision but do not stick together, and car A goes off 10 m/s to the west. what will ...
*Sunday, January 5, 2014 at 2:07pm by jeremy*

**physics**

Car A with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. assume these two vehicles experience an inelastic collision but do not stick together, and car A goes off 10 m/s to the west. what will ...
*Sunday, January 5, 2014 at 2:15pm by jeremy steadman*

**Physics**

1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will...
*Tuesday, April 8, 2014 at 12:40pm by Jaime*

**physics**

a compact car has mass 725 kg and is moving at 100 km/h. a) find its momentum b) at what velocity is the momentum of a larger car, mass 2175 kg., equal to that of the smaller car?
*Monday, January 31, 2011 at 2:57pm by skhan*

**AP Physics B**

Calculate the force of gravity on a spacecraft 12,800 km (2 earth radii) aboce the Earth\'s surface if its mass is 1400 kg. Ok for this question I first converted to meters for the radius then applied newtons law net force radial = m1 a radial = Fg = r^-2 G m1 m2 Fg = (1.28 E ...
*Friday, September 11, 2009 at 7:56pm by AP Physics B*

**physics**

The mass of an unloaded car is 800 kg. The body of the car will sink 6 cm after getting in 5 persons of total mass of 500 kg. How much is the time of period of vibration of the unloaded car and loaded with passengers?
*Saturday, October 12, 2013 at 2:19am by Anonymous*

**physics**

You need to provide units for the 6.0 speed. I assume the units of the car's mass (1400) are also kg. Anyway, require that they both have the same M*V product. Then solve for the velocity of the bike & rider
*Monday, November 22, 2010 at 9:48pm by drwls*

**PHYSICS**

WHEN SIX PEOPLE WHOSE AVERAGE MASS IS 84 KG SIT DOWN IN A CAR, THEY FIND THAT THE CAR DROPS .84 CM LOWER ON ITS SPRINGS. THEN THEY HAVE GET OUT OF THE CAR AND BOUNCE IT UP AND DOWN. THE ACCELERATION OF GRAVITY IS 9.8 M/S^2. WHAT IS THE FREQUENCY OF THE CAR'S VIBRATION IF ITS ...
*Sunday, January 13, 2013 at 8:58pm by KOCHU*

**Physics**

Four people sit in a car. The masses of the people are 41 kg, 47 kg, 53 kg, and 55 kg. The car's mass is 1020 kg. When the car drives over a bump, its springs cause an oscillation with a frequency of 1.00 Hz. What would the frequency be if only the 41-kg person were present? ...
*Friday, March 30, 2012 at 11:54pm by Priyanka*

**Physics **

A 1400 kg car rounds a curve of 57 m banked at an angle of 14 degree If the car is traveling at 98 km/h, how much friction force will be required? I cannot figure out how to solve this problem. Someone please help me?
*Sunday, June 17, 2012 at 7:55pm by Mike Joseph*

**college physics**

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 50 km/h (31 mph). A new model of mass 1400 kg takes 0.18 s from the time of impact until it is brought to rest. Calculate the...
*Sunday, March 14, 2010 at 11:44am by Anonymous*

**physics**

several students are riding in bumper cars at an amusement park. the combined mass of a car A and its occupants is 250 kg. the combined mass of car B and its occupants is 200 kg. Car A is 15 m away from car B and moving to the right at 2 m/s when the driver decides to bump ...
*Monday, June 9, 2008 at 10:24pm by shelly*

**physics**

A car of mass 1500 kg traveling at 15.6 m/s loses its brakes and collides with the rear end of the car in front of it, which has a mass of 1020 kg and is traveling in the same direction at 12.5 m/s. If the smaller car is given a speed of 15.3 m/s by the collision, what is the...
*Thursday, April 18, 2013 at 10:00pm by YOLO*

**physics**

Four people, each with a mass of 72.7 kg, are in a car with a mass of 1110 kg. An earthquake strikes. The driver manages to pull of the road and stop, as the vertical oscillations of the ground surface make the car bounce up and down on its suspension springs. When the ...
*Saturday, October 16, 2010 at 4:31pm by tom*

**physics**

A compact car has a mass of 1150 kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. (a) What is the spring constant of each spring if the empty car bounces up and down 2.2 times ...
*Monday, March 31, 2014 at 8:17pm by Hannah*

**Psychics**

A freight car is moving freely along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together and continue to move down the track. What is the magnitude of the final velocity of the cars if the freight car has...
*Thursday, March 17, 2011 at 3:01pm by Kendra *

**Physics**

Jake has a mass of 88.0 kg and is zooming along in a 110.0-kg bumper car at 9.4 m/s. He bumped Allen's car, which is sitting at rest. Allen has a mass of 88.0 kg. After the elastic collision, Jake continues ahead with a speed of 3.2 m/s. How fast is Allen's car bumped across ...
*Monday, March 18, 2013 at 5:59pm by Ian*

**Physics**

An old Chrysler with mass 1800 kg is moving along a straight stretch of road at 58 km/h. It is followed by a Ford with mass 1400 kg moving at 70 km/h. How fast is the center of mass of the two cars moving?
*Tuesday, July 20, 2010 at 1:38pm by Teddy*

**Physics**

A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 390 cm2. It is filled with oil of density 530 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1500 kg at equal fluid levels? kg HELP: The pressure is constant at ...
*Saturday, November 6, 2010 at 3:48pm by Kimbo*

**physics**

How do i find this? A shooting star is a meteor that burns up when it reaches Earth's atmosphere. Many of these meteoroids are quite small. Calculate the kinetic energy of a meteoroid of mass 6.0 g moving at a speed of 45 km/s and compare it to the kinetic energy of a 1400-kg ...
*Sunday, April 4, 2010 at 9:44pm by raina*

**physics : different question **

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s
*Tuesday, March 8, 2011 at 6:33pm by Diana*

**Physics**

Okay, I saw this one previously posted, but the answer it kept leading me to was wrong. A sports car of mass 1400kg (including the driver) crosses the rounded top of a hill (radius 88m) at 23 m/s. Find the normal force exerted by road on the car. I thought that the normal ...
*Sunday, March 7, 2010 at 6:41pm by Morgan*

**physics**

Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest. 2000 kg car going 5m/s 500 kg car going 20 m/s 1000 kg car going20m/s 500 kg car going10m/s 1000 kg car going10/s 4000 kg car going 5m/s
*Tuesday, March 8, 2011 at 6:32pm by Diana*

**Physics**

A 1400-kg race car can go from 0 to 90km/h in 6.0s . What average power is required to do this?
*Wednesday, November 13, 2013 at 4:33pm by Anonymous*

**physics ( please help me)**

a) 4.00m/s b)velocity of object is 0, so your answers should be (Mass of car * 4.00 )/(Mass of car - 40.0 kg) c) 2 initial velocities this time, and the object is going the opposite direction. You should have [(Mass of Car * 4.00) - (40kg *6) ] / (Mass of car + 40kg)
*Tuesday, April 3, 2012 at 3:48pm by Anonymous*

**physics**

a race car travels 22 m/s around a circular track of radius 142 m/ what is magnitude of the resultant force on the 1400 kg driver answer his car? answer in units of kN. the angle from the wheel to the horizontal is 32 degree..and u= .11
*Sunday, November 21, 2010 at 3:31am by vanessa*

**Physics of Vehichle **

A 1400 kg car rounds a curve of 57 m banked at an angle of 14 degrees If the car is traveling at 98 km/h, will a friction force be required? If so, in what direction? May someone please walk me through this problem step by step? Thank you
*Saturday, June 16, 2012 at 5:20pm by Mike Joseph*

**Science PHYSICS**

SO desperate with help with this. What is the magnitude of the acceleration that this force will cause when applied to a car with a mass of 1.1x10³Kg Then calculate the final speed of the car (above) assuming that it was standing still initially and that the force of 5.0 x 10...
*Wednesday, March 24, 2010 at 8:29am by Alice*

**math**

Two cars have a head on collision. Both are traveling at 28 m/s toward each othe. Car A has a mass of 700 kg and car B has a mass of 904kg. What is car B velocity after the impact?
*Sunday, November 14, 2010 at 11:20am by Mayte*

**Physics**

train car with mass m1 = 521 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 5.1 m/s. 1)What is the initial momentum of the first train car? I ...
*Friday, March 1, 2013 at 11:44pm by John*

**Physics**

In a front-end collision, a 1400 kg car that has shock-absorbing bumpers can only withstand a maximum force of 75 kN before any sort of damage occurs.If the maximum speed for a car that is nondamaged in a collision is 10 Km/h, by how much must the bumper be able to move ...
*Thursday, January 29, 2009 at 1:41pm by Harold*

**Physics**

A railroad car with a mass of 12000 kg collides and couples with a second car of mass 18000 kg that is initially at rest. The first car is moving with a speed of 9 m/s before collision. If external forces can be ignored, what is the final speed of the two railroad cars after ...
*Monday, March 24, 2014 at 8:06pm by Amanda*

**physics**

The rate of energy use in a typical house is about 2.0 kW (2.0 × 103 W). If the kinetic energy of a 1400-kg car is equal to the total energy used by the house in 1 min, what is the car’s speed?
*Wednesday, July 10, 2013 at 4:00pm by SIMONAAA*

**physics**

A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of 11000 kg and a length of 49 m. The cannon fires to the right; the car recoils to the left. The cannon balls remain in the car after hitting the wall. ...
*Saturday, March 3, 2012 at 12:03pm by Katie*

**physics help go!**

Two cars are traveling at the same speed of 27 m/s on a curve that has a radius of 126 m. Car A has a mass of 1020 kg, and car B has a mass of 1670 kg. Find (a) the magnitude of the centripetal acceleration and (b) the magnitude of the centripetal force for Car A, (c) the ...
*Thursday, February 10, 2011 at 7:10pm by Hannah*

**Khudu secondary **

Car A of mass 1 000 kg,stationary at a traffic light,is hit from behind by car B of mass 1 200 kg,traveling at 18 m.s-1. Immediately after the collision car A moves forward at 12 m.s-1. 1. Assume that linear momentum is conserved during this collision. Calculate the speed of ...
*Sunday, March 10, 2013 at 8:02am by Antony*

**physics**

A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor may ask you to turn in this work.. (a) Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing the momentum. kg · m/s...
*Monday, December 6, 2010 at 8:07pm by max*

**physics**

A compact car, mass 705 kg, is moving at 1.00 102 km/h toward the east. Sketch the moving car. Do this on paper. Your instructor may ask you to turn in this work.. (a) Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing the momentum. kg · m/s...
*Monday, December 6, 2010 at 8:07pm by max*

**Physics **

A 1400-kg car rounds a curve of 57-m banked at an angle of 14 degrees. If the car is traveling at 98-km/h (27-m/s), will a friction force be required? If so in what direction? How much friction force will be required?
*Thursday, June 14, 2012 at 11:49am by Mike *

**center of mass-please help**

The CM of an empty 1170 kg car is 2.50 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.8 m from the front of the car, and three people sit in the back seat 3.90 m from the front? Assume that each person ...
*Tuesday, March 9, 2010 at 8:28pm by Anonymous*

**Physics**

A car with a total mass of 1.48 103 kg has wheels of radius 33.5 cm and moment of inertia 0.810 kg · m2. (a) Find the car's translational kinetic energy when the car is moving at a speed of 30.0 m/s. (b) Find the car's rotational energy when the car is moving at a speed of 30....
*Tuesday, December 10, 2013 at 3:16pm by BrandiB123456789*

**physic**

A small car with a mass of 950 kg travels northward at 30 m/sDoes the car have more or less momentum than a truck with a mass of 10000 kg traveling eastward at 16 m/s?How much more or less?.
*Wednesday, February 9, 2011 at 3:09pm by Anonymous*

**Physical Science**

An automobile traveling at 25km/hour has kinetic energy equal to 1x10 to the fourth power J. What is the mass of the car? K.E. = (1/2)M V^2 = 10^4 J Convert the speed to m/s and them use that V to solve for the mass of the car, in kg. V = 25000 m/hr x (1 hr/3600 s) = _____ m/s...
*Monday, June 25, 2007 at 2:39pm by Sharon kay*

**physics**

A military gun is mounted on a railroad car (m = 1590 kg) as shown in Figure P7.34. There is no frictional force on the car, the track is horizontal, and the car is initially at rest. The gun then fires a shell of mass 26 kg with a velocity of 280 m/s at an angle of 28° with ...
*Sunday, October 2, 2011 at 9:34pm by megan*

**Physics**

I'm given two cars A and B Car A is 1100 kg and traveling at 11 m/s Car B is 1400 kg and traveling at 15 m/s and I'm asked to fidn the velocity of both is just the net velocity 4 m/s ??? I'm also to find the impulse and how would I do that??? impulse is chang in momentum over ...
*Wednesday, June 17, 2009 at 2:23am by Physics*

**Physics**

How much work is done to move a 1400 kg car from rest to 25 m/s.If this takes place over a distance of 130 m, what is the average net force?
*Saturday, July 23, 2011 at 5:11am by Aditya*

**math**

A large truck with a mass of 6500·kg and going 20·m/s east collides with a car whose mass is 1100·kg and which is at rest. If the impulse exerted on the car by the truck is 12000·N·s east, find the impulse exerted by the car on the truck. Take east as the postive direction
*Thursday, October 27, 2011 at 9:23pm by jen*

**physics**

A locomotive that has a mass of 6.4 x 105 kg is used to pull 2 railway cars. Railway car 1 has a mass of 5.0 x 105 kg, is attached to railway car to that has a mass of 3.6 x 105 kg by a locking mechanism. A railway engineer tests the mechanism and estimates that it can only ...
*Wednesday, October 30, 2013 at 11:19pm by Anthony*

**Physics**

A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors; in other words, all of ...
*Monday, April 18, 2011 at 12:05am by Kaylynn*

**physics**

A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors; in other words, all of ...
*Monday, April 18, 2011 at 9:27am by Kaylynn*

**physics **

A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors; in other words, all of ...
*Thursday, April 28, 2011 at 5:10pm by Anonymous*

**physics**

A 85.0 kg person steps into a car of mass 2500.0 kg, causing it to sink 2.5 cm. Assuming no damping, with what frequency will the car and passenger vibrate on the springs?
*Monday, April 28, 2008 at 3:22pm by help?*

**physics**

A railway flat car is rushing along a level frictionless track at a speed of 45m/s. Mounted on the car and aimed forward is a cannon that fires 65 kg cannon balls with a muzzle speed of 625m/s. The total mass of the car, the cannon, and the large supply of cannon balls on the ...
*Monday, October 10, 2011 at 6:30pm by Alejandro*

**physics**

A delivery truck with a mass of 1700 kg is stopped in the street w/o its brakes on, when a small car hits it from behind. The car has a mass of 650 kg, and is traveling at 3.7m/s immediately before it hits the truck. Both the car and the truck have good bumpers, so assume the ...
*Wednesday, November 10, 2010 at 7:42pm by aok*

**physics**

An automobile with a mass of 1400 kg has a speed of 30.0 m/s. What is its kinetic energy
*Monday, June 6, 2011 at 12:08pm by kaleigh*

**Physics**

Car 1 has a mass of m1 = 65 103 kg and moves at a velocity of v01 = +0.78 m/s. Car 2, with a mass of m2 = 92 103 kg and a velocity of v02 = +1.4 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine the velocity of their center ...
*Wednesday, November 9, 2011 at 10:54pm by Taylor*

**Physics**

Car 1 has a mass of m1 = 65 103 kg and moves at a velocity of v01 = +0.76 m/s. Car 2, with a mass of m2 = 92 103 kg and a velocity of v02 = +1.5 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine the velocity of their center ...
*Tuesday, July 10, 2012 at 3:07pm by Emily*

**physics**

Two cars approach an ice-covered intersection. One car, of mass 1.22 103 kg, is initially traveling north at 10.6 m/s. The other car, of mass 1.69 103 kg, is initially traveling east at 10.6 m/s. The cars reach the intersection at the same instant, collide, and move off ...
*Thursday, November 29, 2012 at 10:15pm by Anthony*

**physics**

I tried doing this problem but couldnt get the right answer. I dont get how the answer is 2.19cm. Is the distance referring to the vertical or horizontal distance Four people, each with a mass of 73.5 kg, are in a car with a mass of 1190 kg. An earthquake strikes. The driver ...
*Monday, October 4, 2010 at 3:35pm by flame*

**physics**

a 2500 kg car accelerates from rest under the act of two forces. 1.) a forward force of 1400 N between the wheels and the road. 2.) 1140 resistive force due to various frictional forces. Use the work-kinetic theorem to determine how far the car must travel for its speed to ...
*Monday, November 29, 2010 at 10:45pm by mikaela*

**Physics**

Two geekie physics students with a combined mass of 131 kg jump into their old car to run out for some late night pizza. The distance between the front and back axles of the car is 2.9 m. When they get in the car, the springs compress a total of 9.3 cm. On their way to the ...
*Monday, April 12, 2010 at 11:55pm by Jacob*

** scienc**

I'm driving my car of mass 1000 kg at 100 km/hr when I accidentally hit the rear end of a truck of mass 5000 kg traveling in the same direction at 90 km/hr. My car and the truck lock together and move as a single object. Let F1 be the force the truck exerts on my car and let ...
*Monday, March 18, 2013 at 12:33am by ayan*

**physics**

A mine car, mass= 440 kg rolls at a speed of 0.50 m/s on a horizontal track. A 150-kg chunk of coal has a speed of 0.80 m/s when it leaves the chute. The chunk of coal falls into the car at a 25 degree angle. Determine the velocity of the car/coal system after the coal has ...
*Friday, November 28, 2008 at 2:30am by Sandhya*

**physics**

The loaded car of a roller coaster has mass M = 320 kg. It goes over the hig a speed v of 21.4 m/s. The radius of curvature R of the hill is 62.3m (a) What is the force (N) that the track must exert on the car? (positive is (b) What must be the force (N) that the car exerts on...
*Saturday, August 6, 2011 at 9:41am by waqas*

**physics**

An open train car, with a mass of 2070 kg, coasts along a horizontal track at the speed 2.31 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 3.25 s at the rate of 491 kg/s. What is the car's speed after the loading is completed?
*Monday, November 19, 2012 at 10:01pm by Alex*

**Physics**

constant velocity components Vx = 4500/1400 Vy = 0 Vz = -3000/1400 goes for 18-9 or 9 seconds distance = speed*time so x = 94 + 9*4500/1400 y = 0 + 0 z = 30 -9(3000/1400)
*Thursday, January 23, 2014 at 6:42pm by Damon*

** computer programing**

Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. A truck with mass of 2000 kg, traveling to the west at 25 m/s. An inelastic collision occurred, not sticking together, the car goes off 10 m/s to the west. What is the resulting velocity of the truck?
*Friday, April 12, 2013 at 4:38pm by Amandos Leonard*

**Physics**

A mine car (mass 380 kg) rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a speed of 0.80 m/s when it leaves the chute. Determine the velocity of the car/coal system after the coal has come to rest in the car.
*Tuesday, April 1, 2008 at 4:25pm by Will*

**Physics**

The mass of a car is 2400 kg. the constant power supplied by the engine is 60 kW and the car starts from rest. What is the speed of the car at the end of 2 seconds?
*Sunday, January 24, 2010 at 6:02pm by Leah*

**Physics**

A race car has a mass of 714 kg. It accelerates uniformly from rest, and travels 55 m in 2.95 s. What is the acceleration of the car? And, what is the net force acting on the car?
*Wednesday, November 28, 2012 at 8:36pm by Molly*

**Physics**

If the force of the road on the car's wheels, pushing it forward, is a constant 3.5 kN, and the car's mass is 2 kg, then how long will the car take to go from 15 m/s to 50 m/s?
*Thursday, February 14, 2013 at 2:33pm by Adelaide*

**Physics**

Car 1 has a mass of m1 = 65 multiplied by 103 kg and moves at a velocity of v01 = +0.95 m/s. Car 2, with a mass of m2 = 92 multiplied by 103 kg and a velocity of v02 = +1.1 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine ...
*Tuesday, February 22, 2011 at 10:10pm by Lauren*

**Physics**

A 2010 kg car traveling to the west at 18.5 m/s slows down uniformly under a force of 8880 N to the east. a) How much force would be required to cause the same acceleration on a car of mass 3120 kg? How far would the car move before stop- ping? Answer in units of m
*Sunday, November 13, 2011 at 9:07pm by Eileen*

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