144. A 2,400-kilogram car is traveling at a speed of 20. meters per second. Compared to the magnitude of the force required to stop the car in 12 seconds, the magnitude of the force required to stop the car in 6.0 seconds is (1) half as great (2) twice as great (3) the same (4) four times as great
144. A 2,400-kilogram car is traveling at a speed of 20. meters per second. Compared to the magnitude of the force required to stop the car in 12 seconds, the magnitude of the force required to stop the car in 6.0 seconds is (1) half as great (2) twice as great (3) the same (4) four times as great
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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please help with questions 144,145,146 and 147
Transcribed Image Text:144. A 2,400-kilogram car is traveling at a speed
of 20. meters per second. Compared to the
magnitude of the force required to stop the
car in 12 seconds, the magnitude of the force
required to stop the car in 6.0 seconds is
(1) half as great
(2) twice as great
(3) the same
(4) four times as great
145. A 2.0-kilogram cart moving due east at
6.0 meters per second collides with a
3.0-kilogram cart moving due west. The
carts stick together and come to rest after
the collision. Calculate the initial speed of
the 3.0-kilogram cart.
146. A 0.180-kilogram cart traveling at 0.80 meter
per second to the right collides with a
0.100-kilogram cart initially at rest. The carts
lock together upon collision. Calculate the final
velocity of the carts.
147. A 2.0-kilogram cart traveling north at
4.0 meters per second collides head on with a
1.0-kilogram cart traveling south at 8.0 meters
per second. What is the magnitude of the total
momentum of the two carts immediately after
the collision?
(1) 0.0 kg · m/s
(2) 8.0 kg · m/s
(3) 16 kg m/s
(4) 32 kg m/s
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