6. A 1500 kg car drifts along a level road and slows down from 35 m/s to 25 m/s in 20 seconds. What is the net force acting on the car? What is causing this force?

Question

asked Jul 9, 2020 216k views

1 Answer

Sino · Answer 1 · 2020-07-16T14:41:40+0000

Answer:

750N

Step-by-step explanation:

Newton’s Second Law of Motion in Terms of Momentum

The net external force equals the change in momentum of a system divided by the time over which it changes

$net force=(momentum change)/(time)\\ =(m(V_(final)-V_(initial)))/(time) \\=(1500(35-25))/(20) \\=750 N$

change in velocity causes this force