Question

A cricket ball of mass 150 g moving at a speed of
25 ms-is brought to rest by a player in
0.03 s. Find the average force applied by the
player.
Ans. 0.125 N​

Answer 1

Explanation:

Given Values

Mass(m)=150g=0.150kg,Time(t)=0.03s,Initial velocity(u)=0, Final velocity(v)=25m/s

Force=Mass×Acceleration

Acceleration=v-u/t

a=25-0/0.03

a=25/0.03

Force=m×a

F=0.150×25/0.03(kg/ms^2)

F=0.125N or 0.125kg/ms^2

Answer 2

Answer:

Using Newton's Second Law,

           F=dp/dt

             =0.15×25/0.03

             =125 N

             

Note: g should be converted to kg