Monday

April 21, 2014

April 21, 2014

Number of results: 9,836

**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*

**icp**

you wreck a car travveling at 88 m/sec and decelerate at -200/s2 how far will the car crumble in at you.
*Monday, March 28, 2011 at 9:12pm by rich*

**Earth and Physical Science**

A 901 kg car is traveling north down a country road when a deer crosses in front of the car. By slamming on the breaks, the care is able to decelerate at 4.0 meters per second squared. What is the frictional force between the street and the car?
*Monday, February 7, 2011 at 7:52pm by Caitlin*

**physics**

The tires of a car make 58 revolutions as the car reduces its speed uniformly from 92 to 33 . The tires have a diameter of 0.86 . What was the angular acceleration of the tires? If the car continues to decelerate at this rate, how much more time is required for it to stop?
*Thursday, May 26, 2011 at 11:41am by juana*

**physics help!**

The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much more time is required ...
*Thursday, March 25, 2010 at 10:35am by Anonymous*

**Physics**

An automobile is traveling 65 km/hr. It brakes decelerate it 6.o m/s^2. a) How long will it take to stop the car? b) How far will the car travel after the brakes are applied?
*Wednesday, November 3, 2010 at 10:37pm by may*

**Physics**

A child drops a ball onto the road 28 m in front of a car travelling at 50 km/h. If the car can decelerate at a rate of 3.5 m/s2, will it stop before hitting the ball?
*Tuesday, March 6, 2012 at 4:51pm by Jayy*

**Physics**

A car with good tires on a dry road can decelerate at about 5.0m/s/s when braking. If the car is traveling at 55miles/hour, how much time does it take the car to stop? 55 mph = 80.7 ft/s = 24.6 m/s Divide the initial speed by the deceleration rate to get the time required. (24...
*Monday, September 18, 2006 at 8:37pm by Savannah*

**Science **

At an accident scene, 276-m long skid marks are found on the road. If the car that made these skid marks can decelerate at –9.8 m/s2, how fast was the car going before braking?
*Thursday, November 3, 2011 at 9:28am by Ray*

**math**

If a car is traveling at 55 mph in one direction, how long would it take to decelerate, turn around, and catch up with another car going at a steady speed of 100 mph in the opposite direction?
*Wednesday, July 6, 2011 at 7:16am by Robin*

**science**

If the weight of a vehicle is doubled, would the deceleration of the vehicle be doubled? For example if a car decelerated at 6m/s, would a car double the size, decelerate at 12m/s or is their some other factor involved? Thanks for your help
*Saturday, May 17, 2008 at 2:19am by Melody*

**physics**

A car is originally traveling at 15.0 meters per second on a straight horizontal road.The driver applies the brakes causing the car to decelerate at 4.00 meters per second ^2 until it comes to a rest. Determine the cars stopping distance
*Monday, September 26, 2011 at 7:55pm by Mary Gertriude*

**physics help please!!!**

The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much more time is required ...
*Friday, March 26, 2010 at 12:59pm by Anonymous*

**8th grade science**

101 km/h = 28.06 m/s To decelerate from velocity V in a distance X at a rate of a = 300 m/s^2, V = sqrt(2 a X) X = V^2/(2 a) = 1.3 meters This assumes the crash is into an immovable object, so that all deceleration is achieved by collapsing the front end. A collision with ...
*Sunday, February 14, 2010 at 10:07pm by drwls*

**physics**

Two cars are initially moving at constant speeds of 50 m/s (first car) and 30 m/s (second car) along a straight track with the first car being behind. At a certain point (e.g. point A) on the track the first car overtakes the other one. At this very moment of time the first ...
*Thursday, September 29, 2011 at 6:33pm by Chris*

**9th grade physical science**

When friction is small (as when wet or icy), the road cannot apply enough force to the tires when the car has to accelerate, decelerate, climb a hill of make turns. Skidding then results.
*Saturday, November 13, 2010 at 10:57am by drwls*

**Physics**

A car with good tires on a dry road can decelerate at about 5 m/s^2 when breaking. Suppose a car is initially traveling at 65 mph. What is the stopping distance?(give answer in meters and in feet) I changed 65mph into 29.05m/s. so I would use d-d_0 = (v^2 -v_0^2)/2a and when I...
*Wednesday, September 12, 2007 at 4:33pm by Tammy*

**Physics**

Car A is traveling at 18 m/s and car B at 25 m/s. Car A is 300m behind car B when the driver of Car A accelerates his car with an acceleration of 1.80m/s^2. How long does it take car A to overtake car B?
*Tuesday, January 8, 2013 at 9:25pm by B*

**Physics**

A car can decelerate at -4.80 m/s^2 without skidding when coming to rest on a level road. What would its deceleration be if the road were inclined at 13 degrees uphill? Assume the same static friction force. Supposively the answer is -7.00 m/s^2 but I keep on getting -2.47 m/s...
*Monday, December 21, 2009 at 9:21pm by Jake*

**Physics #2**

A car can decelerate at -3.40 m/s2 without skidding when coming to rest on a level road. What would be the magnitude of its deceleration if the road were inclined at 14° uphill? Assume the same static friction coefficient.
*Monday, October 11, 2010 at 5:08pm by Jason*

**Physics I**

A car can decelerate at -4.40 m/s2 without skidding when coming to rest on a level road. What would be the magnitude of its deceleration if the road were inclined at 12° uphill? Assume the same static friction coefficient.
*Wednesday, May 25, 2011 at 9:53pm by Jason*

**physics**

The car needs to decelerate at a rate "a" such that sqrt(2aX) = V a = V^2/(2 X) To get the answer in m/s^2, you first need to convert the speed V to m/s and the distance X to meters. He needs to brake to avoid breaking. Note the spelling of those different words.
*Tuesday, August 9, 2011 at 7:11pm by drwls*

**Physics 11**

The brakes on a car permit it to decelerate at the rate of -8.0m/s^2. How much distance is required to stop this car when it is travelling 60.0km/hr? The answer given is 173.6m I solved it this way 60km/h = 16.667m/s A=V/T 16.667m/s / -.80m/s^2 = 20.834 seconds D=RT 16.667m/s ...
*Wednesday, February 6, 2008 at 3:12am by David*

**physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*Monday, October 15, 2007 at 4:31pm by Tammy*

**Physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*Monday, October 15, 2007 at 6:24pm by Tammy*

**physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*Monday, October 15, 2007 at 9:33pm by Tammy*

**Physics-momentum/impluse**

hi well i have two questions i dont understand how to solve and all. 1) The front of a 1400-kg car is designed to absorb the shock of a collision by having a "crumple zone" in which the front of 1.2m of the car collapses in absorbing the shock of a collision. if a car ...
*Wednesday, December 6, 2006 at 12:38am by becky*

**Math **

Car A is travelling at a constant speed of 100mph at the time it passes a stationary vehicle (Car B). If the Car B hopes to catch Car A within a mile, how fast must Car B travel? Assume Car B can accelerate from 0-60mph in 6 seconds.
*Thursday, October 6, 2011 at 3:04pm by Chris *

**physics**

Two cars both travel along a straight road Northbound. At t = 0, the car 1 is 190.6 m further north than car 2. Also at t = 0, car 1 is travelling at 24.3 m/s, and car 2 is travelling at 5.7 m/s. Car 1 is slowing down with an acceleration of magnitude 0.28 while car 2 is ...
*Wednesday, September 19, 2012 at 9:41pm by Ty*

**Physics**

a) Add up the times it takes to accelerate and decelerate. The time required to accelerate is (26 m/s)/3 m/s^2 = 8.67 s The time required to decelerate from 26 m/s^2 at a constant rate of -1 m/s^2 is 26 s. b) Add up the distances covered while accelerating and decelerating. ...
*Thursday, September 3, 2009 at 1:30am by drwls*

**Physics ***HELP*****

please explain how you got the answer car A - 20m/s car B - 30m/s Assume that both cars are 5m long. Suppose that car B is 20m behind car A is attempting to overtake car A. How long will it take for car B to arrive 10m ahead of car A?
*Thursday, July 3, 2008 at 7:19pm by Tom*

**math physics i think**

We have 2 cars. Car "A" and car "B" if car A weighs 3180 lbs If car "B" weighes 2000 pounds How fast would car "A" have to travel to knock car "B" 32 feet?
*Saturday, September 24, 2011 at 10:25am by Jay Schmetz*

**University Physics**

Consider this traffic problem that is played out in many communities everyday! A car is cruising down the highway of life @ 25m/s in a 3-m long compact car when he comes upon an intersection with a stop sign. At the instant that he is 45 m away from the entrance to the ...
*Tuesday, February 12, 2013 at 5:25pm by Amy*

**Physics**

A CAR HAS A MASS OF 1200KG TRAVELLING ON A LEVEL ROAD. THE CAR DECELERATED AT A RATE OF 10M/S^2 TILL THE CAR STOPPED. iT HAS TO OVERCOME A TOTAL RESISTANCE OF 400N WHILE BRAKING. (I) CALCULATE THE BRAKING FORCE OF THE CAR (II) WHAT WAS THE DRIVING OF CAR OF THE CAR?
*Friday, June 17, 2011 at 1:58am by Janice*

**physics**

A 1000 kg car in neutral gear slow from 15 m/s to a stop in 5.0 s due to the force of friction. A. What was the acceleration of the car. B. What was the car’s initial momentum? C. What was its final momentum? D. What was the change in momentum of the car? E. What was the ...
*Sunday, October 23, 2011 at 11:59pm by Anonymous*

**physics**

Seatbelts provide two main advantages in a car accident: (i) they keep you from being thrown from the car, and (ii) they reduce the force that acts on you during the collision to survivable levels. The second benefit can be illustrated by comparing the net force exerted on the...
*Thursday, May 17, 2007 at 12:10pm by micole*

**Physics**

Car A passes Car B on the highway. Rlative to car A's movement, Car B is moving at a rate of 9 mph backward. If the speed of Car A is 98 mph, what us the speed of Car B?
*Friday, March 22, 2013 at 12:15pm by Renay*

**Math**

car A costs 20% less than car B. Car B is twice as expensive as car C. Car C costs what percent of Car A?
*Monday, July 23, 2012 at 11:11pm by Destini*

**physics**

Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance Da beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed Va. Car B starts at the starting line but has a ...
*Thursday, June 30, 2011 at 4:39am by mjLa*

**Physics help**

A car travels in a circle whose radius is 31 m, with a speed of 19 m/s. (1) What is the magnitude of the car's acceleration? _____ m/s2 (2) What is the nature (origin) of the horizontal force on the car? (What is exerting the force?) The force causing the car to turn is: ...
*Sunday, October 28, 2012 at 10:57pm by arcos15*

**physics**

A short train (an engine plus four cars) is accelerating at 1.10 . The mass of each car is 38000 , and each car has negligible frictional forces acting on it. In solving this problem, note the importance of selecting the correct set of cars to isolate as your object. a.What is...
*Monday, February 25, 2008 at 2:13pm by jose2*

**math**

A Freight train passed through a town. Behind the engine was the coal car. The cattle car was between the milk car and the lumber car. The open boxcar was in front of the flat car but directly behind the milk car. Of course, a caboose was at the end. In what order were the ...
*Friday, September 23, 2011 at 3:10pm by Katie*

**physics**

Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at starting line but has better engine than car A ...
*Sunday, September 27, 2009 at 7:20pm by help*

**physics**

Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at starting line but has better engine than car A ...
*Sunday, September 27, 2009 at 8:27pm by help*

**physics**

A toy car runed off the edge of a table that is 1.225m high. If the car lands 0.400m from the base of the car to fall, a)how long does it take the car to fall 2(1.225)/-9.80=-0.25=0.5s b)what is the horizontal velocity of the car?
*Saturday, December 12, 2009 at 3:54pm by Anonymous*

**physics**

2 cars are in a race the first car is 200m ahead of the second car.the first car is moving with a uniform velocity of 30m/s while the second car starts from rest and accelerate to a rate of 4m/s how far and how long will it take the second car to meet the first car
*Wednesday, February 9, 2011 at 7:44am by Seun*

**math**

Car B is 48km ahead of Car A. If Car Bis not moving and Car A is moving at 48km/h, how long will it take Car A to reach Car B?
*Friday, July 2, 2010 at 5:45pm by vanessa*

**physics**

Car A travels at a speed of 15m/s and is 200 m ahead of Car B traveling in the same direction at 20 m/s. How far will Car B travel before cathing Car A.
*Thursday, September 9, 2010 at 9:42pm by Mike*

**distance 2 cars **

if car A is going 40 mph and car B is stationary , how fast would car b have to go to cath up to car A in 4/10 of a mile
*Wednesday, July 11, 2012 at 2:19pm by James *

**10 grade**

A 80 slug car runs into a wall while moving at 10ft/s. If the car bounces off the wall with the same speed it struck it with as a result of having been in contact with the wall for .8 second, then find... a)... The initial momentum of the car b)... The final momentum of the ...
*Thursday, February 10, 2011 at 12:44am by sravya*

**Phisic mechanic**

A trailer mechanic pushes a 2500 kg car, home to a speed v, performing a job during the 5000 J. In this process, the car moves 25 m. Neglecting friction between the car and roadway: (A) What is the final velocity v of the car? (B) What horizontal force exerted on the car?
*Monday, October 4, 2010 at 12:37am by cls*

**Phisic mechanic**

A trailer mechanic pushes a 2500 kg car, home to a speed v, performing a job during the 5000 J. In this process, the car moves 25 m. Neglecting friction between the car and roadway: (A) What is the final velocity v of the car? (B) What horizontal force exerted on the car?
*Monday, October 4, 2010 at 12:37am by Anonymous*

**physics**

At the moment car A is starting from rest and accelerating at 5.0 m/s2, car B passes it moving at a constant speed of 45m/s. How long will it take car A to catch up with car B?
*Thursday, January 17, 2013 at 10:42pm by Marissa*

**physics**

A loaded truck is going at a speed of 36 km/hr and a car starts at point 3 km behind the truck with an acceleration of 2 m/s. when will the car overtake the car? What is the distance covered by the car before it overtakes the car?
*Tuesday, July 3, 2012 at 8:33am by chan*

**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*

**math**

six cars are parked in front of a car dealership. If you are looking at the cars from the front. the red car is parked in front of the green car. the black car is between the green and the yellow car. The blue car is parked on the right side of the red car. the orange car is ...
*Tuesday, September 20, 2011 at 12:36am by jen*

**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*

**math**

Suppose that a certain municipality uses the equation y=3(x-50)+30 to determine the fine assessed a car which exceeds the 50 mph speed limit. Let x=speed of the car (in mph) and y=corresponding fine in dollars. a)What is the fine for traveling at 55 mph? b)If the fine is $126...
*Sunday, December 30, 2012 at 9:46pm by kathy m.*

**Math**

A first time car buyer is looking for a good used car to purchase. In addition to the cost of the car, there is a licensing fee of $140 and sales tax of 10% of the cost of the car. If the buyer only has $6740 to spend, what is the most expensive car that can be purchased?
*Sunday, September 23, 2007 at 6:33pm by Jessica*

**Zeeland WEST**

In a car accidnet involving a sports car, skid marks as long as 290 m were left by the car as it decelearted to a complete stop. The police report cited the speed of the car before breaking as beeing in excess of 100mph 161 km/m. Suppose that i took 10 seconds for the car to ...
*Wednesday, September 29, 2010 at 2:30am by Abrahm*

**physics**

An ambulance car is going with a speed of 60 km/h, while a car is trying to go around it in a circle with a speed 50 km/h. If the sound that ambulance car emits has a frequency of 1 kHz, which frequency does the driver of the car hear in Hz when the ambulance car is in the ...
*Sunday, September 22, 2013 at 1:09pm by aron*

**Physics**

A car starts from rest and accelerates at a constant rate of 1.1 m/s2. If the radius of the car wheels is 29 cm, and the final angular speed of the car wheel is 48 rad/s, how far does the car travel
*Monday, October 18, 2010 at 11:49pm by Sufian Syed*

**Physics**

A 1900 car starts from rest and drives around a flat 50--diameter circular track. The forward force provided by the car's drive wheels is a constant 1300 . A) What is the magnitude of the car's acceleration at ? B) What is the direction of the car's acceleration at ? Give the ...
*Tuesday, March 15, 2011 at 9:08pm by Dan*

**Physics**

Your car can accelerate at 5m/^2 without a trailer. You add a trailer to your car that has 3 times the mass of your car. At what rate can your car (plus trailer) accelerate now? After accelerating the car travels at a constant speed of 30 m/s. What is the net force acting on it?
*Sunday, September 23, 2012 at 5:01pm by Samantha*

**physics**

Initially a small car and a truck are at rest then the car starts pushing a dead battery truck and they both accelerate. Which of the following statement is true? a)The car exerts a larger force on the truck than the truck exerts on the car. b) The car exerts the same amount ...
*Friday, November 4, 2011 at 9:47pm by Cindy*

**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*

**Algebra 1**

4. Two consultants were hired by a company. The total consultant fees were $18,500. If one consultant had earned $500 less, each consultant would have been paid the same. How much was each consultant paid? 6. Five cars in a race all finished within 8 seconds of each other. Car...
*Monday, October 28, 2013 at 7:38pm by CJ*

**PHYSICS-URGENT HELP**

A stationary police car emits a sound of frequency 1200 Hz that bounces off of a car on the highway and returns to the police car with a frequency of 1250 Hz. The police car is right next to the highway, so the moving car is traveling either directly towards or directly away ...
*Friday, July 29, 2011 at 3:03pm by Brit*

**Physics **

A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come to rest? __________ ...
*Friday, September 21, 2012 at 1:35am by arcos15*

**PHYSICS **

A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come to rest? __________ ...
*Friday, September 21, 2012 at 1:35am by arcos15*

**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*

**physic**

A mechanic pushes a 2,500 kg car from rest to a speed v, with 5000J of work. During this process the car moves 25m. Neglecting friction, calculate: a) the final velocity of car b) The horizontal force exerted on the car
*Sunday, November 7, 2010 at 4:24pm by Luz*

**Physics**

Car A is traveling at 84 km/h while Car B is traveling at 58 km/h. What is the relative velocity of Car A to Car B if they both are traveling in the same direction? What is the relative velocity of Car A to Car B if they are headed towards each other?
*Saturday, August 25, 2007 at 7:03pm by Jayd*

**Physics**

Car A is traveling at 84 km/h while Car B is traveling at 58 km/h. What is the relative velocity of Car A to Car B if they both are traveling in the same direction? What is the relative velocity of Car A to Car B if they are headed towards each other?
*Sunday, August 26, 2007 at 11:23am by Jayd*

**Physics Help, Please! **

When a car goes around a curve (without skidding), on a level road, Select one: a. no friction force is needed because the car simply follows the road. b. the friction force of the road on the car increases when the car’s speed decreases. c. the friction force of the road on ...
*Sunday, November 4, 2012 at 1:48pm by Michael *

**Physics**

a car and a truck start from rest at the same instant with the car initially 50m behind the truck. The truck has a constant acceleration of 2m/s^2 and the car has a constant acceleration of 3m/s^2. The car overtakes the truck after how many seconds? At what speed is the car ...
*Tuesday, February 25, 2014 at 3:49pm by Sergio*

**physics math**

the acceleration of a car is 2m/s^2 and another car has constant velocity of 35m/s.what time the first car overtake the car with constant velocity of the first car? draw and show solution
*Monday, December 10, 2012 at 12:57am by Hshdhdhdhdjdjdjdjjsjshsgshshs*

**Algebra**

John's insurance company will replace his car if repair costs exceed 80% of the car's value. The car recently sustained $8000 worth of damage, but it was not replaced. What was the value of his car?
*Thursday, January 21, 2010 at 9:31pm by jj*

**Physics**

A toy car runs off the edge of a table that is 1.357 m high. If the car lands 0.442 m from the base of the table, (a) how long does it take for the car to fall? s (b) what is the horizontal velocity of the car? m/s
*Wednesday, October 12, 2011 at 6:34pm by Zachy D*

**physics**

a toy car runs off the edge of a table that is 1.225 m high. if the car lands .400 m from the base of the table (A) how long does it take for the car to fall and (B) what is the horizontal velocity of the car?
*Sunday, September 30, 2012 at 4:03pm by Bob*

**Physics**

A car travels at a speed of 25 m/s on a flat stretch road. The driver must maintain pressure on the accelerator to keep the car moving at this speed. The car's engine is doing work on the car, yet the kinetic energy of the car is not changing. What is happening to the energy ...
*Monday, August 5, 2013 at 3:14pm by Rachel.*

**Physics**

A car travels at a speed of 25 m/s on a flat stretch road. The driver must maintain pressure on the accelerator to keep the car moving at this speed. The car's engine is doing work on the car, yet the kinetic energy of the car is not changing. What is happening to the energy ...
*Monday, August 5, 2013 at 3:18pm by Rachel.*

**Physics**

The distance travelled while accelerating at a rate a=14 m/s^2 is X = 450 m and the maximum velocity attained at that time is V = sqrt(2aX) = 112.2 m/s. The time required to decelerate to a stop at a rate a' = 7 m/s^2 is t = V/a' = 16.0 s The average velocity while ...
*Monday, September 10, 2007 at 3:41am by drwls*

**Grammar**

Select the correctly punctuated sentence: A) The black car is her’s, and the white car is theirs. B) The black car is hers, and the white car is their’s. C) The black car is her’s, and the white car is their’s. D) The black car is hers, and the white car is theirs. I answered C
*Wednesday, November 28, 2012 at 5:58pm by Marie*

**physics**

Two cars both start from rest and have the same constant acceleration. When radar is used to measure the velocity of each car, car A is found to be moving twice as fast as car B. At the instant the radar is used, car A has a displacement that is ______ times as great as the ...
*Monday, September 13, 2010 at 3:42pm by Joey*

**physics**

A car, mass - 1950 kg, accelerates at +2.33 m/s (squared). Find the magnitude of the normal force acting on the car. If later, when the car is cruising at 26.5 m/s, the driver applies a force of magnitude 10,000 N to stop the car. What is the distance it takes for the car to ...
*Sunday, February 12, 2012 at 8:06am by jane*

**physics**

A 250 kg car starting from rest is pushed 30m. When the car reaches 30m, it’s traveling at a speed of 12m/s and it encounters 52N of friction. What is the acceleration of the car and what is the force of the push on the car?
*Wednesday, December 1, 2010 at 11:46am by Alyssa*

**DYNAMICS**

A car has an initial speed of 25m/s and a constant deceleration of 3m/s^2. Determine thewvelocity of the car when t=4s. What is the displacement of the car during the 4-s time interval? How much time is needed to stop the car?
*Sunday, February 17, 2013 at 8:18pm by HELP*

**Physics**

A 24-ton freight car rolls along a straight track with a speed of 10mph. A 2.0 ton automobile falling vertically lands on the freight car from above. a) what is the speed of the freight car after the car lands on it? b) the car then rolls sideways off the freight car. What is ...
*Thursday, April 26, 2012 at 10:26pm by Sarah*

**physics**

A mechanic pushes a 2.50 x 10^3 kg car from the rest to a speed of v, doing 5000J of work in the process. During this time, the car moves 25.0 m. Neglecting friction between car and road, find (a) v and (b) the horizontal force exerted on the car.
*Monday, October 22, 2007 at 10:42pm by Anonymous*

**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**

Imagine a fender bender between a large truck and a small car. During the impact, Choose one answer. a. the truck exerts a greater amount of force on the car than the car exerts on the truck b. the car exerts a greater amount of force on the truck than the truck exerts on the ...
*Friday, February 8, 2013 at 2:59pm by Kirk*

**math**

a car depreciates in by avalue of $1000 per year. The original value of the car is $30,000. Let V(x) be the value of the car in x years. Write the linear function that represent the value of the car in x years. what will be the value of the car after 7 years?
*Monday, June 17, 2013 at 4:35pm by kirk*

**algebra**

the price of a car depricates over time at a rate of approximately 18% according to the formula (C)t=36,500(0.82)^t. what was the inital cost of the car? what will the car be worth in 4 years? when will the car be worth less than 5,000?
*Tuesday, February 21, 2012 at 11:27am by jessica*

**Physics**

Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2 continues to move with a ...
*Tuesday, May 26, 2009 at 9:36pm by RJ*

**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 *

**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*

**Physics**

Momentum is M*V It is clearly the same for bus and car, since M(bus)*V(bus) = 3*(1/3) M(car)*V(car) = M(car)*V(car) The kinetic energy of the car is three times that of the bus. I hope you see why. K.E. = (1/2)*(momentum)*V With momentum the same for both, the KE ratio is the ...
*Monday, December 17, 2012 at 11:23pm by drwls*

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