Question

6)A body of mass 5 kg moves with an acceleration of 4m/s2 in a straight line . what will be the change in its momentum in 2 seconds?

Answer 1

Answer:

Change in momentum = 40 kgm/s

Explanation:

By newton's 2nd law of motion

F= dp/dt or Change in momentum/time ----(i)

Also, F= Ma-----(ii)

by equating (i) and (ii)

5 X 4 = Change in momentum / 2

40= Change in momentum