Suppose there are two cars, Car A and Car B. The cars are identical, and are...
Suppose there are two cars, Car A and Car B. The cars are identical, and are driving in identical conditions on a level, flat road. Car A speeds up from rest to 60 miles an hour. Car B is already moving and speeds up from 30 miles per hour to 90 miles an hour.
How many times bigger is the work done on Car B than on Car A?
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Suppose there are two cars, Car A and Car B. The cars are
identical, and are...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and ski...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and skids to a stop, the length of the skid marks (in feet) is given by the formula L0.000 013 3xy2 where x is the weight of the car (in pounds) and y is the speed of the car (in miles per hour). What is the average length of the skid marks for cars weighing between 2,000 and 3,000 pounds and traveling at speeds...
Two cars moving in the opposite direction have a head-on collision, in which both come to...
Two cars moving in the opposite direction have a head-on collision, in which both come to rest. Calculate the average force exerted on car A during this collision. Given: Masses: Car A = 1000 kg Car B = 1200 kg Speeds: Car A = 30.0 mile per hour Car B = 25.0 miles per hour Time of collision = 0.150 s.
42. Car A drives East at a constant 25 miles per hour. At timet0 Car B...
42. Car A drives East at a constant 25 miles per hour. At timet0 Car B starts 250 miles East of Car A and begins from rest, driving West. Car B, however, has a constant acceleration of 10 miles per hour. How far will Car B have to travel (in miles) before the cars are at the same location?
Two cars travel on the parallel lanes of a two-lane road. The cars' motions are represented...
Two cars travel on the parallel lanes of a two-lane road. The
cars' motions are represented by the position versus time graph
shown in the figure. Answer the questions using the times from the
graph indicated by letters.
Analyzing Position versus Time Graphs Conceptual Question Part A At which of the times do the two cars pass each other? Figure 1) Two cars travel on the parallel lanes of a two- lane road. The position versus time graph shown in...
8. A car (mass - 1221 kg) is moving along a straight, level road at a...
8. A car (mass - 1221 kg) is moving along a straight, level road at a constant speed of 8.95 m/s. The car then speeds up to 35.6 m/s in 12.4 s. a. How much work was done on the car during this time? b. What was the average power supplied to the car while it was speeding up?
Two cars travel on a parallel lanes road. The cars’motions are represented by the position versus...
Two cars travel on a parallel lanes road. The cars’motions are
represented by the position versus time graph shown in the figure.
Answer the questions using the times from the graph indicated by
letters.
a) At which of the times do the two cars pass each other?
b) Atwhichoftime,ifany,does car #1 momentarily stop?
c) Atwhichtime,ifany,does car #2 momentarily stop?
d) At which time are the cars moving with nearly identical
velocity?
Car 1 B C Car 2
6. Two cars are moving in a flat parking lot. Car A is moving in a circle of radius 2 and it's position as a function of time,t, is FA(t)2cos(t), 2sin(t) >. A second car, Car B, starts...
6. Two cars are moving in a flat parking lot. Car A is moving in a circle of radius 2 and it's position as a function of time,t, is FA(t)2cos(t), 2sin(t) >. A second car, Car B, starts at the edge of the lot at position re(0) =< 1,-2 >. At t-0, Car B accelerates from rest (initial velocity < 0,0 >) in a straight line with acceleration vector FB"(t)-0,c. Note: At t-0 Car A is at FA(0) 2,0and Car...
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has...
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has mass 6 kg and is traveling at 3 m/s toward the other car- Suppose car 2 has mass 3 kg and is moving toward the other car at 9 m/s. There is a bumper on the second rail car that engages at the moment the cars hit and does not let go (it connects the two cars). The bumper acts as a spring with...
Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for...
Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time tA until it reaches a speed of vA and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from the same point that car A started from, speeds up with constant acceleration aB. a) Make a freehand plot of the speed of each car as a function of time. Label...
2. A car accelerates along a straight road from rest to 90 km/h in 5.0s. What is the magnitude of average accelerat...
2. A car accelerates along a straight road from rest to 90 km/h in 5.0s. What is the magnitude of average acceleration in meters per second squared. 3. If you are driving 110km/h along a straight road and look to the side for 2.0s, how far do you travel during this inattentive period? 4. At highway speeds, a particular car is capable of accelerating at about 1.8m/s?. At this rate, how long does it take to accelerate from 80km/h to...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and skids to a stop, the length of the skid marks (in feet) is given by the formula L0.000 013 3xy2 where x is the weight of the car (in pounds) and y is the speed of the car (in miles per hour). What is the average length of the skid marks for cars weighing between 2,000 and 3,000 pounds and traveling at speeds...
42. Car A drives East at a constant 25 miles per hour. At timet0 Car B starts 250 miles East of Car A and begins from rest, driving West. Car B, however, has a constant acceleration of 10 miles per hour. How far will Car B have to travel (in miles) before the cars are at the same location?
Two cars travel on the parallel lanes of a two-lane road. The
cars' motions are represented by the position versus time graph
shown in the figure. Answer the questions using the times from the
graph indicated by letters.
Analyzing Position versus Time Graphs Conceptual Question Part A At which of the times do the two cars pass each other? Figure 1) Two cars travel on the parallel lanes of a two- lane road. The position versus time graph shown in...
8. A car (mass - 1221 kg) is moving along a straight, level road at a constant speed of 8.95 m/s. The car then speeds up to 35.6 m/s in 12.4 s. a. How much work was done on the car during this time? b. What was the average power supplied to the car while it was speeding up?
Two cars travel on a parallel lanes road. The cars’motions are
represented by the position versus time graph shown in the figure.
Answer the questions using the times from the graph indicated by
letters.
a) At which of the times do the two cars pass each other?
b) Atwhichoftime,ifany,does car #1 momentarily stop?
c) Atwhichtime,ifany,does car #2 momentarily stop?
d) At which time are the cars moving with nearly identical
velocity?
Car 1 B C Car 2
6. Two cars are moving in a flat parking lot. Car A is moving in a circle of radius 2 and it's position as a function of time,t, is FA(t)2cos(t), 2sin(t) >. A second car, Car B, starts at the edge of the lot at position re(0) =< 1,-2 >. At t-0, Car B accelerates from rest (initial velocity < 0,0 >) in a straight line with acceleration vector FB"(t)-0,c. Note: At t-0 Car A is at FA(0) 2,0and Car...
Consider a system of two toy rail cars (i.e.. frictionless masses)- Suppose that car 1 has mass 6 kg and is traveling at 3 m/s toward the other car- Suppose car 2 has mass 3 kg and is moving toward the other car at 9 m/s. There is a bumper on the second rail car that engages at the moment the cars hit and does not let go (it connects the two cars). The bumper acts as a spring with...
2. A car accelerates along a straight road from rest to 90 km/h in 5.0s. What is the magnitude of average acceleration in meters per second squared. 3. If you are driving 110km/h along a straight road and look to the side for 2.0s, how far do you travel during this inattentive period? 4. At highway speeds, a particular car is capable of accelerating at about 1.8m/s?. At this rate, how long does it take to accelerate from 80km/h to...
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