Question

A ball of 0.25 know struck by a bat. After leaving the bat, ball travels with speed 10ms^1 . Calculate impulse

Answer 1

impulse = force(f) × time(t)
= mass(m) × acceleration(a) × time(t)
[ as force = mass × acceleration ]

as acceleration = (v-u)/t
{where u = initial velocity and v = final velocity }


then,

impulse = mass × (v-u)/ time × time
= m× (v-u)
= mv -mu

assuming it's inital velocity 0
the impulse
= (0.25)(10) -(0.25)(0)
= 2.5 - 0
=2.5



so the impulse was 2.5 Ns.