Question

3. A body of mass 2 kg, moving on a hori- zontal surface with an initial velocity of 4 m/s, comes to rest after 2 seconds. If one wants to keep this body moving on the same surface with a velocity of 4 m/s, the force required is
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Answer 1

Answer:

From above figure

A→B

u = 4m/s v=0 t=2sec a=?

v=u+at

0=4+a(2)

a=−2m/s

2

so,

force = ma

=2×2=4N.

Please mark as brainlest.

Answer 2

Answer:

4n yes this is correct answer