Question

3. A constant retarding force of 20 N acts
on a body of mass 5 kg moving initi-ally
with a speed of 10 ms-1. How long does the
body take to stop?
1) 1.5 s
2) 2.5 s
3) 3.5 s
4) 4.5 s​

Answer 1

here is the answer.

by , V= U+AT

U = 10, V = 0 , A = - 20/5 = -4

SO, 0 = 10-4T

T = 2.5 SEC .

HOPE IT HELPS.

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