Question

A body of mass 2 kg moving on a horizontal surface
with an initial velocity of 4 m/s comes to rest after
2 s. If one wants to keep this body moving on the
same surface with a velocity of 4 m/s, the force
required is :-
(1) 8 N
(3) Zero
(294 N
(4) 2 N​

Answer 1

Answer:

8N

Explanation:

I think 8N

check it

I thing formula of f=MA

Answer 2

Answer: option B is the correct answer....

Explanation:

Given that

Mass=2kg, u=4m/s, v=4m/s

Time, t=2 seconds

From the first law of the motion,

V=u+at

4=4+2a

2a=0

a=0m/s²

Now, F=ma

F=2kg×0

F=0

So the force is ZERO.....

Hope it helps you frnd......