Sunday

October 23, 2016
Number of results: 50,061

**College Physics**

A car moving at constant velocity of 14 m/s passes a gasoline station. two seconds later, another car leaves the gasoline station and accelerates at the constant rate of 2m/s^2. How soon will the second car overtake the first?

*May 12, 2016 by Patrick*

**F/maths **

X, Y and Z are three points on a straight road.A car passes X with a speed of 5m/s and travels from X to Y with a constant acceleration of 2m/s^2. The car then moves with a constant retardation of 3.5m/s^2 from Y to Z and comes to rest at Z. If the total distance from X to Y ...

*July 27, 2016 by Ajila Ayobami *

**physics**

A 580 kg cannon and a supply of 41 cannon balls, each with a mass of 38.9 kg, are inside a sealed railroad car with a mass of 31000 kg and a length of 53 m. The cannon fires to the right; the car recoils to the left. The cannon balls remain in the car after hitting the wall. ...

*October 10, 2014 by unless*

**physics**

a 9000 kg railroad car moving at 3 m/s strikes a stationary 5000 kg railroad car .what is the momentum of the 9000 kg railroad car before the collision?

*February 27, 2012 by Anonymous*

**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

*November 13, 2011 by Eileen*

**Math**

A race car starts from rest on a circular track of radius 565 m. The car's speed increases at the constant rate of 0.520 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following. (a) the speed of the race car m/s (b...

*February 19, 2012 by Anonymous*

**Physics**

A race car starts from rest on a circular track of radius 445 m. The car's speed increases at the constant rate of 0.380 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following. (a) the speed of the race car (b) the...

*November 13, 2012 by Greg*

**Physics**

An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.29 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.67 s at the rate of 441 kg/s. What is the car's speed after the loading is ...

*November 19, 2012 by Kyle*

**Physics **

A race car starts from rest on a circular track of radius 279 m. The car's speed increases at the constant rate of 0.760 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following a) the speed of the race car? m/s b) ...

*November 21, 2015 by Anonymous*

**Physics **

A car is driving at a speed of 66.0 km/h toward an intersection just as the light changes from green to yellow. The driver has a reaction time of 0.750 s and the magnitude of the braking acceleration of the car is 5.50 m/s2.Find the minimum distance the car travels before ...

*September 13, 2016 by Alison Zook*

**physics**

A mine car, whose mass is 590 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 0.95 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.

*October 14, 2008 by kb*

**Physics**

A 1000kg car is traveling along a level road at 20.00ms, when the brakes are applied long enough to do 50000 J of work. 1) what is the initial kinetic energy of the car? 2) if the car moved 100m while the brakes where applied, what was the average force exerted on the brakes.

*April 13, 2010 by Kirsten*

**physics**

In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 55 m/s (around 120 mi/h) in a time of 6.1 s. The mass of the car and riders is 5000 kg. Find the average net force exerted on the car and riders by the ...

*September 11, 2011 by Jason*

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2 m/s. The acceleration...

*October 17, 2013 by Willow*

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2 m/s. The acceleration...

*October 17, 2013 by Willow*

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2 m/s. The acceleration...

*October 17, 2013 by Willow*

**math 157**

For the data in the following table, select a type of display and describe the steps that you would take in developing it to show the relationship between age and s/1000 people from car s: Age 1–14 15–24 25–44 45–64 65– Death 4.6 6.2 16.6 8.8 15.

*June 11, 2010 by Deidre *

**Personal Dimension of Educatio**

Compound subjects those joined with and should take singular verbs. For example: the cd player and moon roof is included in the car's price. True or False. My answer is False.

*November 16, 2012 by Jackie*

**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 ...

*January 29, 2014 by annabelle*

**Math**

You are about to leave for vacation, but you forgot your socks! You go back to your room but lights are out, can't see. You remember that in your draw you have 10 pair black, 10 pair white and 11 pair blue all mixed up. How many socks do you need to take out to be SURE you ...

*April 6, 2014 by Laney*

**algebra**

The total toll charge for one car and five bicycles to cross a bridge is $7.50. The toll for a car is $1.50 more than for a bicycle. Find the cost for a car to cross the bridge.

*September 10, 2012 by Jake*

**physics**

Alice has a mass of 70.0 kg and her car has a mass of 1000.0 kg. Alice is sitting in parked car on the side of the road. The magnitude of the normal force exerted by the road on her car is? (use g = 9.81 m/s2)

*November 8, 2015 by Sami*

**pre-cal**

The angle of elevation from a car to the top of an apartment building is 48 degrees. If the angle from another car that is 22 feet directly in front of the first car is 64 degrees. How tall is the building?

*August 21, 2016 by carlos*

**math,help**

how can i factor this out completly x^4+x^3-12 i know that4*-3=-12 but how can i get that middle term x^2*x^2=x^4 first you cannot take out any GCF. so if you decide to use grouping, you can create an equivalent problem: x^4 + x^3 - 6 - 6 then by using grouping (the x-terms ...

*April 20, 2007 by jasmine20*

**College Physics**

The driver of a 1600 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 23.0 m. (a) Find the net work done on the car. (b) Find the magnitude and direction of the force that does this work. (Assume this force is constant.)

*October 10, 2011 by Suzy*

**physics science**

a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

*February 18, 2013 by mvelo*

**physics science**

a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

*February 18, 2013 by mvelo*

**Math**

Value Rent-a-Car rents a luxury car at a daily rate of $37.01 plus 10 cents a mile. A business person is allotted $100 for car rental each day. How many miles can the business person travel on the $100? _______miles

*October 28, 2013 by Jackie*

**Math 250**

Locating a car from the 102nd floor observation deck of the empire state building, an observer spots his car at an angle of depression of 5 degrees. if the observation deck is 1250 feet high, how far is his car from the building?

*November 25, 2015 by Eseta *

**Physics (Help Please)**

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that experienced by...

*April 8, 2014 by Christian*

**College Physics **

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater than that experienced by...

*April 10, 2014 by Christian*

**PHYSICS HELP!**

A compact car has a mass of 1400kg. 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. What is the spring constant of each spring if the empty car bounces up and down 1.9 times each ...

*July 30, 2011 by CEO*

**Algebra I**

1. A Passenger train's speed is 60mi/h and a freight train's speed is 40mi/h. The passenger train travels the same distance in 1.5 h less time than the freight train. How long does each train take to make the trip? 2. Lois rode her bike to visit a friend. She traveled at 10 mi...

*October 9, 2007 by Wilford*

**physics**

A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

*November 4, 2012 by Joe*

**physics**

A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

*November 4, 2012 by Joe*

**College Physics**

A child's toy consists of a toy car of mass 0.100kg which is able to roll without friction on the loop-the-loop track shown. The car is accelerated from rest by pushing it with force F over a distance d, then the car slides with a constant velocity until it encounters the loop...

*March 24, 2013 by C*

**physical science**

two cars 200meters apart drive towards one another. If one car travels at 12 meters/s and the other at 26 meters/s how long does it take for them to collide?

*April 7, 2013 by colin*

**physics**

a motorist runs out of gas and must push his 3000kg car across a flat road 200m to the gas station. ignoring friction how much work must be done in order to get the car to the gas pump? if the motorist accomplishes this in 10 minutes, how much power has he applied? what if the...

*January 8, 2011 by matt*

**Math**

A family left their house in two cars at the same time. One car traveled an average of 7 miles per hour faster than the order. When the first car arrived at the destination after 5 1/2 hours of driving, both cars had driven 599.5 miles. If the second car continues at the same ...

*March 3, 2014 by naveen*

**Physics**

Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.72. How much time does it take for the car to come to a stop? Ignore air resistance.

*October 22, 2009 by Allison*

**Physics Need help plz**

An 1900 kg car is traveling with a speed of (22 +- .22) m/s. With what maximum accuracy can its position be determined? delta x= in meters Can someone please help me out I am lost on this on...Thank you

*April 29, 2013 by Leila*

**Physics Need help plz**

An 1900 kg car is traveling with a speed of (22 +- .22) m/s. With what maximum accuracy can its position be determined? delta x= in meters Can someone please help me out I am lost on this on...Thank you

*April 30, 2013 by Leila*

**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 ...

*February 10, 2011 by Hannah*

**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 ...

*January 29, 2014 by annabelle*

**Physics**

At the instant a traffic light turns green, a car starts with a constant acceleration of 1.8 m/s(squared). At the same instant, a truck travelling at a constant velocity of 8.5 m/s passes the car. How far beyond the starting point will the car catch up to the truck?

*September 15, 2010 by Angela*

**physics**

A car starts from rest and travels for 6.0s with a uniform acceleration of 2.7m/s ^2. The driver then applies the brakes, causing a uniform acceleration of -2.0m/s^2. If the brakes are applied for 2.0s, determine each of the following. a.) how fast is the car going at the end ...

*February 4, 2013 by george*

**English**

Can you please help me work out phrasal verbs related to work? When do you think will you come ...... to work? What are the possible prepositions? back .... are there others? What about "down"? Can you think of any phrasal verbs used with work (apart from take a day off work, ...

*March 22, 2012 by Matthew*

**physics**

what is the acceleration of a point on the time of a flywheel 0.90 m in diameter, turning at the rate of 1200 rev/min?

*September 18, 2012 by zianna*

**algebra**

find all zeros of the equation -3x^4+27x^2+1200=0 If someone could explain it would be helpful

*November 14, 2012 by jayson*

**Physics**

6. If your boat weighs 1200 N, how much water will it displace when it’s floating motionless at the surface of the lake?

*March 21, 2013 by Anonymous*

**physics**

How fast will a roller coaster, with a mass of 1200 kg, be moving at the bottom of an 18 meter tall hill?

*November 4, 2014 by Natalie*

**algebra**

find all the zeros of the equation. -3x^4+27x^2+1200=0 I'm really confused, can someone help explain?

*December 14, 2014 by Anonymous*

**math**

The sum required to earn a monthly interest of Rs.1200 at 18% per annum Simple Interset is:

*November 9, 2015 by Haroon Gondal*

**physics**

A mine car (mass = 452 kg) rolls at a speed of 0.356 m/s on a horizontal track, as the drawing shows. A 179-kg chunk of coal has a speed of 0.863 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.

*November 15, 2009 by sarah*

**Physics**

A driver of a car that is going 25 m/s suddenly notices a train blocking the road. At the instant the brakes are applied, the train is 60 m away. The car decelerates uniformily and stikes the train 3 secs later. (a) How fast was the car moving on impact? (b) What was the ...

*May 11, 2011 by Addie*

**Math**

A car is traveling at a rate of 35 meters per second. What is the car's rate in kilometers per hour? How many kilometers will the car travel in 3 hours? Do not round your answers.

*July 29, 2016 by James*

**Physics**

A car uniformly accelerates from rest at 3 m/s^2 for 8 seconds. At the end of the 8 seconds the car uniformly brakes at -5m/s^2 for 4 seconds. What total distance is traveled by the car during the 12 seconds of motion?

*September 3, 2016 by Elizabeth*

**fraction**

A and B buy a car.A spends 5/11 of car's prices (a)What is the fraction of B? He paid 25240Rs more than A? (b)What is car's prices

*August 27, 2009 by bk*

**math**

Someone has a 1 in:32 in scale model car. the length of the model car is 6 inches. what is the actual length of the car?

*February 7, 2013 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 ...

*December 3, 2009 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 ...

*December 5, 2009 by Anonymous*

**Statistics **

Using advertised prices for used Ford Escorts a linear model for the relationship between a car's age and its price is found. The correlation coefficient is - 0.933 Determine R2 and interpret this statistic. A) R2 = 93.3% which means that 93.3% of the variation in car price is...

*May 26, 2013 by Katie*

**Math**

Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use the ...

*March 27, 2013 by Unknown*

**Statistics**

In a poll, respondents were asked whether they had ever been in a car accident. 220 respondents indicated that they had been in a car accident and 370 respondents said that they had not been in a car accident. If one of these respondents is randomly selected, what is the ...

*May 15, 2016 by Kimmie ;)*

**math**

What are the following percents: 7 out of 53 17 out of 52 4 out of 18 7 out of 18 3 out of 33 9 out of 31 3 out of 35 7 out of 32

*February 14, 2010 by Mattie*

**Physics**

A rollercoaster car starts at rest on top of a frictionless hill of height 17 m, slides down to ground level, and then into a frictionless loop of radius 5 m. When the car is at the side of the loop (level with the center), find the magnitude of the car's tangential ...

*November 6, 2009 by natalia*

**Physics**

A railroad car moves under a grain elevator at a constant speed of 4.10 m/s. Grain drops into the car at the rate of 660 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible? ________ N

*November 18, 2009 by Jane**

**physics**

A car starts from rest and travels for 6.0 s with a uniform acceleration of +2.4 m/s2. The driver then applies the brakes, causing a uniform acceleration of −1.0 m/s2. If the brakes are applied for 3.0 s, determine each of the following. (a) How fast is the car going at ...

*February 3, 2012 by sally*

**Physics**

A railroad car moves under a grain elevator at a constant speed of 3.70 m/s. Grain drops into the car at the rate of 580 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible? F = Ma -> R * V(rel)

*May 22, 2012 by Dan*

**Physics**

A car travels 300 m [N] along a road, then turns a corner and drives an additional 400 m [E]. Draw a vector diagram of the path travelled by the car, and then calculate the car's distance travelled and its displacement. The displacement is 500m and the distance is 1200m. Am I ...

*May 9, 2015 by Anonymous*

**Science**

A 1 420kg car coasts in neutral down a 2.0 degrees hill. The car attains a terminal velocity of 24.3 meters per second. How much power must the engine deliver to drive the car on a level road at 24.3 meters per second?

*April 11, 2016 by Lionel*

**physics**

An amusement park ride consists of a car moving in a vertical circle on the end of a rigid boom of negligible mass. The combined weight of the car and riders is 5.1 kN, and the circle’s radius is 10 m. At the top of the circle, what are the (a) magnitude FB and (b) direction (...

*March 2, 2010 by beav*

**Physics**

when driving at night at a speed of 80 km/hr, a deer suddenly appeared and frozen in your head light. The distance between your car and the deer was 45 meters at the moment you start to break your car as hard as possible in order to avoid the accident Assume that you could ...

*September 1, 2012 by lala*

**Math**

A truck traveling at an average rate of 45 miles per hour leaves a rest stop. Fifteen minutes later a car traveling at an average rate of 60 miles per hour leaves the same rest stop traveling the same route. How long will it take for the car to catch up with the truck?

*February 12, 2013 by nick*

**Physics**

Given: g=9.81 m/s square. The parachute on a race car that weighs 8042 N opens at the end of a quarter-mile run when the car is traveling 35 m/s. What net retarding force must be supplied by the parachute to stop the car in a distance of 1020 m? Answer in units of N. I have no...

*February 25, 2008 by Jenna*

**Physics**

your car has stalled and has come to rest on a level section of a busy street. you and a passenger decide to push the car to the side of the road so it will not interfere with the trafic. together you excert a combine horizontal force of 1320N. the coefficent of static ...

*March 20, 2016 by Jen*

**physics**

A car approaching a bend in a road has its speed decreased from 30m/s to 10m/s.while traversing. A distance of 30m Calculate. 1- What's de retardation 2- How long did it take to traverse this distance

*February 11, 2016 by okeke*

**math **

a car traveling 64 miles per hour passes a bus traveling 53 mph in the same direction on the highway, if they maintain their speeds, how long will it take them to be 17.5 miles apart

*September 22, 2016 by jason*

**Physics**

A spring has an equilibrium length of 20.0 cm and a spring constant of 57.9 N/m. The spring is connected to the underside of the roof of a car and a 0.294 kg block suspended from it. How long (in cm) is the spring when the car is at rest? How long is the spring if the car is ...

*December 8, 2012 by Anonymous*

**corporation**

plz help how can i find out if a company cannot change the constitution can the campany take share from Directors

*May 4, 2007 by sarah*

**math**

I need help with these two questions. Just take out the spaces in this link: h t t p: / /tinypic. c o m/r/nf4fp3/3

*September 16, 2009 by cara*

**calculus**

Four out of five days were used to create a problem, how many day will it take to solve it?

*February 1, 2014 by Crown*

**chemistry **

if I have 3 tablespoons of sugar (15 grams) and dissolve it in 1 cup (~237 mL) and take out 30 mL what is the molarity in the 30 mL?

*April 2, 2016 by Anonymous*

**chemistry **

if I have 3 tablespoons of sugar (15 grams) and dissolve it in 1 cup (~237 mL) and take out 30 mL what is the molarity in the 30 mL?

*April 2, 2016 by Anonymous*

**Functions**

Problem solving with logarithmic functions: A new car has an interior sound level of 70 dB at 50 km h. A second car, at the same speed, has an interior sound level that is two times more intense than that of the new car. Calculate the sound level inside the second car.

*May 26, 2011 by Aimee*

**physics**

A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s. (a)Determine the acceleration of the car. Work: 40m/s x 5s = 200m (0)^2=(40)^2 +2a(200) a=-4 m/s^2 (b) How far ...

*September 7, 2007 by Anonymous*

**Physics**

A cannon on a railroad car is facing in a direction parallel to the tracks. It fires a 99 kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60.0° above the horizontal. If the cannon plus car have a mass of 5.5 104 kg, what is the recoil speed of the car if...

*October 22, 2007 by Dante*

**Physics**

A car is initially travelling at a constant speed of 20 m/s along a highway. Suddenly, the driver applies the brakes, causing the car to accelerate at -5.0 m/s^2. If the driver applied the brakes 0.50s late, determine the distance the car travels from the moment the driver is ...

*September 11, 2012 by Michael*

**Physics.**

A toy car runs off the edge of a horizontal table that is 1.21 m high. The car lands 1.39 m away from the edge of the table How fast was the car moving across the table just before it fell? ____m/s MY WORK: h=1/2gt^2 1.21=1/2(9.8)t^2 1.21=4.9t^2 scuare root; .246 but that ...

*October 23, 2014 by Rose Nicol*

**college**

A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the road on the car. Determine the normal force exerted by the car on the 74 kg driver. Determine the car speed at which the normal...

*February 22, 2010 by Anonymous*

**Algebra **

1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise at lease 252 and each...

*March 13, 2014 by Asia Powell*

**Algebra **

1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise at lease 252 and each...

*March 14, 2014 by Math Help? Please*

**Algebra **

1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise at lease 252 and each...

*March 15, 2014 by Math Help? Please*

**Pre-Algebra 7th Grade**

I need help with this problem: Suppose you design a second model car that is 1/4 the size of the model car you designed in Excercise 9.What is the perimeter of the license plate on the second model car? Let me explain.The perimeter of the actual car's license plate was 36 ...

*March 28, 2011 by Jorge*

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...

*February 8, 2011 by Emily*

**Physics - Please Help**

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy. a) What is the original speed of the first car? b)What is the original speed ...

*February 8, 2011 by Emily*

**math**

the distance between town A and town B was 210km. At 9:20pm a bus sets off from town A to town B and a car left from town B to town A. The average speed of the bus was 60km/h and the average speed of the car was 80km/h. a)Calculate the time at which the car passed the bus. b)...

*February 13, 2013 by Leslie*

**Chemistry**

Which car gets the best mileage? Car A gets 32 miles per gallon Car B gets 14 kilometers per liter

*September 4, 2012 by cristine*

**physics**

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car then stops ...

*October 6, 2010 by flame*

**physics**

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car then stops ...

*October 7, 2010 by flame*