Question

A body is acted upon by a force of 50N towards east. What force must be
acting on the body to stop its motion? Also calculate the force that must be
acting to make it move in the opposite direction.

Answer 1

Answer:

Here, F= -50 N (-ve sign for retardation) m=10 kg, u= 10 ms

−1

, v=0

As F=ma ∴a=

m

F

=

10kg

−50N

=−5ms

−2

Using v=u+at ∴t=

a

v−u

=

−5ms

−2

0−10ms

−1

=2s

Explanation:

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