Thursday

April 17, 2014

April 17, 2014

Number of results: 28,102

**physics**

a 2250 kg car is traveling at 20 m/s to the west. the force required to stop the car at 7890 N to the east. How long will it take the car to stop? How far would the car move before stopping?
*Tuesday, February 25, 2014 at 9:28pm by Karen*

**Physics**

Then the car's initial velocity is -50 mph. The collision is totally inelastic, so the final velocity of both fly and car is -44 mph. Total initial momentum = (4/1000)u - 1980*50 = 0.004u - 99000 kg mph. Total final momentum = (1980 + 4/1000)*(-44) = -87120.176 kg mph. ...
*Wednesday, June 6, 2012 at 1:23pm by Tim Korenman*

**phys**

A boat is traveling upstream at 14 mph with respect to a river that is flowing at 6 mph (with respect to the ground). A man runs directly across the boat, from one side to the other, at 6 mph (with respect to the boat). The speed of the man with respect to the ground is:
*Wednesday, February 19, 2014 at 12:57am by jai*

**physics**

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 210 m, and the car completes the turn in 38.0 s. (a) What is the acceleration when the car is at B located at an angle of 35.0...
*Tuesday, October 25, 2011 at 3:52pm by carlton*

**physics**

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 210 m, and the car completes the turn in 38.0 s. (a) What is the acceleration when the car is at B located at an angle of 35.0...
*Tuesday, October 25, 2011 at 3:53pm by carlton*

**Math**

I have figured the equation for this word problem Train A is traveling parallel to Train B. Train A is traveling at 100 mph and Train B at 110 mph Train A passes a station at 1:15pm Train B passes the same station at 1:45pm When will Train B catch up with Train A? I have 100*t...
*Saturday, May 2, 2009 at 11:28am by Daniel*

**algebra**

two trains leave at the same time from two different stations 284 miles apart, traveling toward each other at 33 mph and 38 mph respectively. how long will it take for them to meet?
*Sunday, October 17, 2010 at 10:34am by john*

**Physics**

Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 22.0 m/s. At the same time, car 2 is 1.4 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an acceleration of magnitude 3.0 m/s2 ...
*Wednesday, October 3, 2012 at 2:08pm by Anonymous*

**Physics**

You are driving at the speed of 33.4 m/s (74.7296 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press your brakes 0.484 s later. Assume that the brakes on both cars are fully engaged and ...
*Saturday, January 8, 2011 at 2:39pm by Chris*

**calc**

a) A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 40 ft/s^2. What is the distance covered before the car comes to a stop? b) A car braked with a constant deceleration of 40 ft/s^2 and produced skid marks measuring 160 feet...
*Sunday, November 22, 2009 at 3:49am by Jill*

**sci prt 2 **

1. The Bugatti Veyron can go from zero to 60 mph in 2.5 seconds. (a) How many meters does it travel during the 2.5-s period? (b) What is the Bugattiˇ¦s rate of acceleration? 2. A bullet traveling 220 m/s strikes a tree and penetrates 4.33 cm before stopping. (a) Find the ...
*Thursday, November 3, 2011 at 9:30am by ray*

**Maths**

40 min = 2/3 hr 60 min = 1 hr let the speed of the swimmer in still water be x mph let the speed of the river be y mph (2/3)(x+y) = 2 2(x+y) = 6 x + y = 3 1(x-y) = 2 x - y = 2 add them 2x = 5 x = 2.5 , then by mental math, y = .3 his rate in still water is 2.5 miles in 60 ...
*Friday, February 1, 2013 at 12:57pm by Reiny*

**physics**

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 259 m, and the car completes the turn in 38.0 s. a)Determine the car's speed.m/s b)What is the magnitude and direction of the ...
*Thursday, October 18, 2012 at 11:09pm by Karrine*

**physics**

a car traveling at 43m/s decelerates at a rate of 7.1 m/s squared. how long did it take the car to stop? what distance did the car travel while stopping?
*Thursday, March 27, 2014 at 2:29am by ben*

**science (check answers)**

4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I PICK THIS) C.the ...
*Wednesday, January 29, 2014 at 12:53pm by annabelle*

**physics**

A car traveling 50 m/s has tires tires that with radii of 0.25 m. The driver of the car hits the brakes and brings the car to a stop in 5 seconds. What is the angular acceleration of the tires on the car?
*Monday, April 25, 2011 at 5:23pm by bejay*

**science(1answer)**

4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I PICK THIS) C.the ...
*Wednesday, January 29, 2014 at 1:37pm by annabelle*

**Calculus**

Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found that M'(x) = 3,600x−2 − 1/ (3,600x−1 + x)2. Estimate M'(10), M'(60), and M'(90). (Round your answers to seven decimal places.) M'(10) = mpg/...
*Tuesday, September 17, 2013 at 10:17pm by Justin*

**Calculus**

Your Porsche's gas mileage (in miles per gallon) is given as a function M(x) of speed x in miles per hour. It is found that M'(x) = 3,600x−2 − 1/ (3,600x−1 + x)2. Estimate M'(10), M'(60), and M'(90). (Round your answers to seven decimal places.) M'(10) = mpg/...
*Tuesday, September 17, 2013 at 10:29pm by Justin*

**Physics**

A car traveling at 86 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.86 m. What was the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g = 9.80 m/s2
*Sunday, September 4, 2011 at 5:56pm by Adnane*

**Physic**

A car traveling 100 km/h is 200m away from a truck traveling 50 km/h (in the same direction). Assuming constant braking acceleration, what is the minimum deceleration the car must have if it is not to hit the truck? Can someone hint me on how I can start this problem? Thanks
*Wednesday, August 28, 2013 at 6:03pm by Shadow*

**physics**

Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a circular turn. Which statement is true about the acceleration of the cars? a.) acceleration of both cars is zero b.) car A is accelerating but car B...
*Tuesday, October 19, 2010 at 2:21am by jo*

**Physics**

A boat is traveling with a speed 7.2 mph over the water and at a direction of 87 degrees counterclockwise from east. The river itself is flowing east at 4.9 mph relative to its bank. What is the speed of the boat relative to the river bank to the nearest hundredth of a mph?
*Friday, September 10, 2010 at 2:38am by G*

**Physics**

You are driving at the speed of 33.4 m/s (74.7296 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press your brakes 0.484 s later. Assume that the brakes on both cars are fully engaged and ...
*Saturday, January 8, 2011 at 2:16pm by Chris*

**physics**

While standing on 3rd street you hear an approaching ambulance. Its siren oscillates in frequency between about 650 Hz and 750 Hz. Later on as you near your destination, you come upon the scene of the accident. The now-stationary ambulance runs its siren as it's about to drive...
*Saturday, October 6, 2012 at 6:47pm by Anonymous*

**physics**

While standing on 3rd street you hear an approaching ambulance. Its siren oscillates in frequency between about 650 Hz and 750 Hz. Later on as you near your destination, you come upon the scene of the accident. The now-stationary ambulance runs its siren as it's about to drive...
*Saturday, October 6, 2012 at 6:48pm by Anonymous*

**math**

let the speed in the car be x mph so 5/6.6 + 5/x = 10/10.4 5/x = 10/10.4 - 5/6.6 5/x = .20396 x = 5/.20396 x = 24.5 he should drive the last 5 miles at 24.5 mph check if avg speed is 10.4 mph, then it took 10/10.4 hours or .9615 hours time jogging = 5/6.6 = .7576 hours time in...
*Wednesday, August 19, 2009 at 6:14pm by Reiny*

**Math**

Please help me! Two cars leave town going opposite directions. One car is traveling 55 mph, and the other is traveling 65 mph How long will it take before they are 180 miles apart? Hint: The time for both cars is the same and can be represented by "t." The total distance is ...
*Monday, November 6, 2006 at 8:11pm by Yuck Fou!*

**Help...Math...Algebra...please!...**

Two cars leave town going in the same direction. One travels 55 mph and the other travels 65 mph How long will it take before they are 180 miles apart? Hint: We do know that one car is 180 miles ahead of the other, so the slow car's distance can be represented by " d " and the...
*Thursday, November 16, 2006 at 4:52pm by Jessica*

**physics**

A 1600 kg car traveling at a speed of 31 m/s skids to a halt on wet concrete where uk = 0.60. how long are the skid marks?
*Saturday, October 2, 2010 at 1:28pm by mike*

**physics**

You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...
*Saturday, March 31, 2012 at 9:14pm by sara*

**physics**

A bicyclist starts a timed race at 6 mph In order to win, he must average 21 mph Assuming constant acceleration from the start, how fast must he be traveling at the end of the race?
*Tuesday, February 15, 2011 at 11:46pm by anonymous*

**math**

Two professional drag racers are speeding down a 1/4-mile track. If the lead driver is traveling 1.738 feet for every 1.670 feet that the trailing car travels, and if the trailing car is going 198 miles per hour, how fast in miles per hour is the lead car traveling?
*Tuesday, October 13, 2009 at 10:06pm by Bob*

**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**

a car traveling in a large circle passes by a motorcycle that is traveling in a straight line from North to South. both of their speedometers read 10m/s. which statement below is true? A. The car and the motorcycle have the same speed, but different velocities. B. The car and ...
*Saturday, January 8, 2011 at 11:52pm by Anonymous*

**calculus**

It would help if you posted your question using proper English, with capitals and periods..... At a time of t hours, let the distance of the car past the intersection be x miles. let the distance between the car and the farmhouse be d I get a simple right-angled triangle with ...
*Friday, March 1, 2013 at 2:55pm by Reiny*

**physics**

can you show me how to do this mathematically A car traveling 90 km/h is 100 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?
*Saturday, June 20, 2009 at 1:02pm by Physics*

**Analytical Mechanics**

A car traveling at 100Km/hr smashes into a concrete abutment. Show that the collision is the equivalent to driving off the top of a ten story building. Allow 4 meter per story and neglect air resistance. Next, find the equivalent vertical height to represent the effect of a ...
*Tuesday, February 8, 2011 at 9:26pm by Garrett*

**Calculus**

"Two cars are traveling along perpendicular roads, car A at 40mph, car B at 60mph. At noon, when car A reaches the intersection, car B is 90miles away, and moving toward it. At 1PM the distance between the cars is changing at what rate?" So lost! Please help!
*Tuesday, January 24, 2012 at 6:29pm by Chris*

**physics**

Two cars start from rest at the same location and at the same instant and race along a straight track. Car A accelerates at 6.6 fps2 to a speed of 90 mph and then runs at this constant speed. Car B accelerates at 4.4 fps2 to a speed of 96 mph and then runs a a constant speed...
*Saturday, January 22, 2011 at 2:06pm by David*

**Physics - Momentum of cars at intersection**

The momentum component of the combined cars in the eastern direction exceeds the component in the north-traveling direction. Therefore most of the momentum came from the east-traveling car. The ratio is cos22/sin22 = 2.475 Assuming the cars had about the same mass, the east-...
*Wednesday, September 1, 2010 at 6:07am by drwls*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...
*Tuesday, February 5, 2013 at 7:45am by RR*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...
*Tuesday, February 5, 2013 at 8:21am by RR*

**ALGEBRA 1!!!(2)**

2.Two cars leave town going opposite directions. One car is traveling 55 mph, and the other is traveling 65 mph How long will it take before they are 180 miles apart? Hint: The time for both cars is the same and can be represented by "t." The total distance is 180 miles. The ...
*Monday, November 6, 2006 at 7:54pm by SANDRO!*

**PHYSICS**

a)speed is the magnitude of instantaneous velocity. Is the average speed equal to the magnitude of the average velocity? Justify b)under what condition is the average equal to instantaneous velocity? c)a car travels 40 mph for 2 hrs and 60 mph for 3hrs.what is the average speed?
*Monday, July 26, 2010 at 8:40am by josh*

**math**

At 3 pm a plane left the airport for LA traveling at 600 mph. At 3:30, another plane left the same airport on the same route traveling 650 mph. What time did the 2nd plane overtake the first. A. 5:15 pm B. 6:45 pm C. 6:50 pm D: 7:15 pm E: 9:30 pm Is D correct?
*Sunday, November 7, 2010 at 8:52pm by Sam*

**physics**

A car with good tires on a dry road can decelerate at about 5.00m/s^2 when braking. If the car is traveling at 34.0m/s, how long does it take the car to stop under these conditions?
*Tuesday, June 14, 2011 at 3:10pm by Rebecca*

**Science**

A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?
*Friday, April 12, 2013 at 2:54pm by Lele Reynolds*

**physic**

You are traveling at a constant speed υM, and there is a car in front of you traveling with a speed υA You notice that υM>υA, so you start slowing down with a constant acceleration a when the distance between you and the other car is x. What relationship...
*Sunday, September 29, 2013 at 3:58pm by kolam*

**math**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
*Tuesday, February 26, 2013 at 10:30pm by El*

**Algebra**

I need to set up this problem algebraically. Also I can't figure out to work it out. It's a relative rate problem. Bob leaves Bismarck traveling east along Interstate 94 at 65 mph. At the same time Tony leaves Fargo traveling west on Interstate 94. Since he is pulling a ...
*Sunday, April 5, 2009 at 1:13pm by Jillian*

**physics, dynamics**

Two cars are traveling along a straight road. Car a maintains a constant speed of 89 km/hr and car b maintains a constant speed of 119 km/hr. at t=0 car b is behind 38km from car a. How far will car a travel from t =0 before it is overtaken by car b. how long from t=0 will it ...
*Thursday, January 13, 2011 at 10:39pm by Anonymous*

**math**

For a motor vehicle traveling at r miles per hour, the distance d in feet required to stop is approximately d=0.05r^2 + r. If a school bus is traveling at 45 mph, how many feet, to the nearest foot would it travel?
*Saturday, December 14, 2013 at 7:35pm by Cynthia*

**Physics**

The driver of a Cadillac is traveling at a constant 60mi/hr. A police car is 20m behind the perpetrator when it too reaches 60 mi/hr and at that moment the officer floors the gas pedal. If the police car roars up to the rear of the Cadillac 2.0s later what was its acceleration...
*Tuesday, November 5, 2013 at 6:48pm by Alexander*

**math**

If a car is travelling at 35 MPH and rear ends another car, at what rate will the impact be?
*Monday, October 22, 2007 at 2:21pm by MARY*

**calculus**

make a sketch At a time of t hrs, let the distance the police car is from the intersection be x miles let the distance the speeding car is from the intersection be y miles let the distance between them be d miles d^2 = x^2 + y^2 2d dd/dt = 2x dx/dt + 2y dy/dt d dd/dt = x dx/dt...
*Tuesday, January 17, 2012 at 11:53am by Reiny*

**Physic Help**

In heavy rush-hour traffic in Atlanta, you drive in a straight line at 21 mph for 5 miles. Then you have to stop for 10 minutes and finally drive slowly by a car wreck that is 2 miles away at a steady 15 mph. After the wreck, the road is clear, and you can drive the last 12 ...
*Monday, September 3, 2012 at 3:10pm by Megan Lee*

**geometry **

20.45 mph solution: 30ft X 1 mi X 60 S X 60 min = 108000 108000/ (1s X 5280 ft X 1 min X 1hr) = 20.45 mph
*Tuesday, January 5, 2010 at 10:11pm by Beth*

**Pre-Calculus**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
*Tuesday, February 26, 2013 at 10:30pm by Michelle*

**physics**

you are traveling in your car at a velocity of 24.0 m/s east when you slam on your brakes. The force of friction on your car tires is 1.80x10^4 N. If the mass of you and your car is 1.50x10^3 kg, how far do you skid before stopping?
*Saturday, October 22, 2011 at 3:00pm by Anonymous*

**PHYSICS**

A 1500- KG CAR IS MOVING WITH A VELOCITY OF 20m/s on a straight road when the brakes are applied uniformly. The car stops after traveling a distance of 200m.what is the braking force on the car?
*Wednesday, February 29, 2012 at 4:44pm by ALHARRADH*

**Math check answer please**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40mph, B is traveling at 44 mph. Train A passes a station at 820am, train B passes the same station at 850. At what time will train B catch up to train A. My estimate is 924am
*Thursday, July 8, 2010 at 5:16am by Christy*

**inter med algebre**

these were extra credit quest to help grade but i could not do these i asked so many people there were stumped can who gets this ques can u do the whole promlem pleasw. Questin; Pick a car and finf its top speed . Assuming that your chosen carnreaches its top speed at the top ...
*Monday, December 13, 2010 at 3:55am by Linda P**

**math**

two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?
*Monday, October 24, 2011 at 9:14am by jane *

**math**

two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?
*Monday, October 24, 2011 at 9:14am by jane *

**algebra**

Some bank robbers leave town, speeding at 71 mph. Twelve minutes later, the police give chase, traveling at 80 mph. How long will it take after the robbery for the police to overtake the robbers?
*Wednesday, January 25, 2012 at 2:32am by Anonymous*

**calculus**

Two cars start from the same point at the same time. One travels north at 25 mph, and the other travels east at 60 mph. How fast is the distance between them increasing at the end of 1 hr? Find D after 1 Hr, solve D^2=25^2+ 60^2
*Tuesday, October 23, 2012 at 10:22am by Allison*

**Physics**

A car traveling at 20 m/s accelerates at 7 m/s2 for 3 sec. How fast is it now traveling? Please help!
*Tuesday, January 15, 2013 at 11:17pm by Jamie*

**Science**

The forward motion of the cannonball is the same as the forward motion of the ship; while the cannonball is in the air, the ship keeps moving to keep up with it, and the ball returns to its original position. Look at it another way. You are on a ship. The ship is moving at a ...
*Wednesday, February 10, 2010 at 2:30pm by DrBob222*

**Math**

When Clint began his pursuit, Sue was already 60 miles ahead. If Sue travels at 40 mph and Clint travels at 60 mph, how many hours will it take Clint to catch up with Sue? It is a distance problem I do know that. I am not sure what type. Either + or =. I am very unsure and ...
*Monday, February 22, 2010 at 1:59pm by Crystal*

**Calculus**

According to Car and Driver, an Alfa Romeo going 70 mph requires 177 feet to stop. Assuming that the stopping distance is proportional to the square of the velocity, find the stopping distance required by an Alfa Romeo going at 55 mph and at 115 mph.
*Wednesday, January 19, 2011 at 5:54pm by Brittany *

**calculus**

According to Car and Driver, an Alfa Romeo going 70 mph requires 177 feet to stop. Assuming that the stopping distance is proportional to the square of the velocity, find the stopping distance required by an Alfa Romeo going at 45 mph and at 115 mph.
*Wednesday, January 19, 2011 at 9:18pm by Jamie*

**algebra help**

Two motorcyclists start at the same point and travel in opposite directions. One travel 3 mph faster than the other. In two hours they are 206 miles apart. How fast is each traveling? The speed of the slower motorcyclist is ___ mph.
*Thursday, October 21, 2010 at 9:07pm by kate*

**Algebra 1**

Two bullet trains leave the station at the same time traveling in opposite direction. The northbound train goes 125 mph and the southbound train goes 120 mph. After how long will they be 735 miles apart?
*Thursday, December 5, 2013 at 7:25pm by Ale*

**Physics**

The driver of a 1350 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 15.0 m. Find the net work done on the car. Not sure how to set this problem up.
*Wednesday, October 5, 2011 at 7:02pm by Help*

**Physics**

A car with a mass of 1815 kg is traveling down a road for 50 meters. It takes the car five seconds to travel this distance. Calculate the velocity, momentum, and kinetic energy of the car.
*Sunday, January 13, 2013 at 10:10pm by Eliza*

**trigonometry**

my choices are 2094.4 mph 209.4 mph 1047.2 mph 104.7 mph
*Wednesday, January 7, 2009 at 8:02pm by y912f*

**Algebra**

A bus leaves a station at 1 P.M., traveling west at an average rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east at a rate of 48 mi/h. At what time will the buses be 274 mi apart? They separate at a rate of 44 + 48 = 92 mph. Divide 274 miles ...
*Friday, August 3, 2007 at 3:03pm by Kattbyrde*

**pysics**

two automobiles are 60 miles apart an dtraveling in the same direction. The first automobile is behind the second and is moving at 60 mph and overtaking the second automobile which is moving at 45 mph. in how many hours will the first pass the second. a)4 b)2.5 c)1.75 d)1.5 e).55
*Monday, September 2, 2013 at 9:56pm by sam*

**physics**

Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?
*Saturday, November 21, 2009 at 7:07pm by Josh*

**physics**

Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?
*Monday, November 23, 2009 at 2:18pm by ronnie*

**Chemistry**

Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time...
*Tuesday, October 1, 2013 at 9:29am by bridget *

**math**

rate = distance/time Alden: rate = 2/(3/4) mph = 2(4/3) = 8/3 mph or appr 2.67 mph Kira: rate = 1.75/.5 mph = 3.5 mph
*Wednesday, January 1, 2014 at 10:42pm by Reiny*

**Physics**

Suppose that a NASCAR race car is moving to the right with a constant velocity of +92 m/s. What is the average acceleration of the car? (b) Twelve seconds later, the car is halfway around the track and traveling in the opposite direction with the same speed. What is the ...
*Monday, September 5, 2011 at 10:11pm by Kyle*

**Physics - elastic collision**

Car A, with mass of 1735kg, was traveling north at 45.5km/h and car B, with a mass of 2540kg, was traveling west at 37.7km/h when they collided at an intersection. if the cars stuck together after the collision, what was their combined momentum? Was the collision elastic or ...
*Saturday, September 4, 2010 at 11:16am by Shaila*

**math**

Maria drives 69 mph and Ming drives 60 mph. How far apart will they be in 3 hours?
*Thursday, April 19, 2012 at 8:27pm by Sue*

**Physics**

How do we know that 6 seconds of uniform acceleration at 60 mph is equivalent to 6 seconds travel at 30 mph?
*Wednesday, September 9, 2009 at 6:20am by sandhu*

**physics**

a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know
*Tuesday, May 28, 2013 at 9:15pm by Anonymous*

**physics**

A car is equipped with a bumper that is designed to absorb collisions. The bumper is mounted to the car using pieces of flexible tubing. The car is traveling at 1.5 m/s when it collides with a rigid black wall. If the wall exerts an average force of 44.1 kN on the car as the ...
*Friday, October 5, 2012 at 12:34am by Vmel*

**Physics**

A car with 60 cm diameter tires is traveling at a constant speed of 100 km/hr. What is the angular velocity of the tires in rad/s?
*Wednesday, November 14, 2012 at 8:50am by Bryan*

**Physics**

A car with 60 cm diameter tires is traveling at a constant speed of 100 km/hr. What is the angular velocity of the tires in rad/s?
*Wednesday, November 14, 2012 at 4:56pm by Bryan*

**physics**

A 2200-kg sport utility vehicle traveling at 96 km/h can be stopped in 0.15 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and the velocity changes in 0....
*Tuesday, October 18, 2011 at 6:35pm by jim*

**algebra d=rt word problem**

A car travels from one town to another at a speed of 32 mph. If it had gone 4 mph faster, it could have made the trip in 1/2 hour less time. How far apart are the towns.
*Thursday, February 26, 2009 at 8:05am by mark*

**physics**

A truck is traveling with a uniform velocity 24 m/s, when it passes a car at rest, at this instant the car starts to move and accelerate at the rate of 6m/s^2 in the same direction as the truck. a.) How long will it take the car to overtake the truck b.) How fast will the car ...
*Friday, September 9, 2011 at 8:59pm by jesthony*

**Physics**

A 9500kg car traveling at 16m/s strikes a second car. The two stick together and move off with a speed of 6.0m/s. What is the mass of the second car?
*Monday, October 22, 2007 at 9:54pm by Eddie*

**Physics**

A 1.3 X 10^3 kg car traveling with a speed of 2.5 m/s executes a turn with a 7.5 m radius of curvature. Calculate the centripetal acceleration of the car and the centripetal force acting on the car.
*Monday, May 24, 2010 at 4:13pm by James*

**math**

A cyclist leaves his training base for a morning workout, riding at the rate of 18 mph. One hour later, his support staff leaves the base in a car going 52 mph in the same direction. How long will it take the support staff to catch up with the cyclist once the car leaves the ...
*Tuesday, September 21, 2010 at 1:48am by aaron kennedy*

**physics**

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
*Sunday, April 15, 2012 at 11:39pm by kelly*

**Physics **

An unmarked police car traveling a constant 80km/h is passed by a speeder traveling 135km/h. Precisely 3.00s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.50m/s^2 , how much time passes before the police car ...
*Sunday, October 6, 2013 at 12:11am by Matthew*

**math**

D = RT (Distance = Rate x Time) R = D/T 35 min = .58 hour (35/60) D = 25 mi, T = .58 h R = 25/.58 = 43.10 mph to nearest mph = 43 mph
*Wednesday, February 2, 2011 at 10:46pm by helper*

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