Question

a ball of mass 150g, moving with an acceleration 20 m/s2, is hit by a force, which acts on it for o.1 sec. This impulsive force is:

Answer 1

force = mass x acceleration

F = ma

F = 150/1000 x 20

F = 3N

Impulse = Force x Time

Impulse = 3 x 1 => 3 N s

Answer 2

=> F = M × A

=> F = 150 × 1000 /20

=> F = 3 N

Now impulse force. = F × T

Impulse force = 3 N. s