Question

A cricket ball of mass 100 gm is travelling at 30 m/s. It strikes a bat and travels back at th same speed. How much change in momentum does the bat suffer

Answer 1

momentum=mv

.1x30= 3joules

Answer 2

m= 100g = 100×10^(-3)kg

v = 30 m/s

momentum,p = m×v

$= 100 \times {10}^{ - 3} \times 30$

$= 3 \times {10}^{3} \times {10}^{ - 3}$

=3 kg m/s