Question

A particle of mass M is moving with speed u. it is stopped by a force f and distance X. if stopping forces is 4f then what is stopping distance​

Answer 1

Answer:

X/4

Explanation:

use v^2-u^2=2as to find out retardation and then apply F= Ma

Answer 2

Answer:

As △KE is same in both the cases, work done will be same.

Explanation

Work done = K.E

Even though force is different, ΔK.E doesn't change.

Hence, work done will not change.

Hope it helps you