Answer to Question #5425 in Mechanics | Relativity for Vanessa

Question #5425
The driver of the compact car in the previous problem suddenly applies the brakes hard for 2.0 s. As a result, an average force of 5.0x10^3 N is exerted on the car to slow it down. The previous problem has a car that weighs 725 kg that is moving at 115 km/h that has a momentum of 2.32x10^4 kgm/s eastward. Also has another car that weighs 2175 kg with a velocity of 38.4 km/h. What is the change in momentum; that is, the magnitude and direction of the impulse, on the car? Complete the "before" and "after" sketches, and determine the momentum and the velocity of the now.
1
Expert's answer
2011-12-08T09:12:05-0500
The driver of the compact car in the previous problem suddenly applies
the brakes hard for 2.0 s. As a result, an average force of 5.0x10^3 N
is exerted on the car to slow it down. The previous problem has a car
that weighs 725 kg that is moving at 115 km/h that has a momentum of
2.32x10^4 kgm/s eastward. Also has another car that weighs 2175 kg with a
velocity of 38.4 km/h. What is the change in momentum; that is, the
magnitude and direction of the impulse, on the car?
<img style="width: 625px; height: 524px;" src="../../..//assignments/uploaded_files/static/91/b2/91b2f8748f2878eae3e17c012a5d3c10.png" title="" alt="">

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