Question

Q.1. A ball of 150 g mass moves with 12 m /s and bounce back after hitting a wall with 20 m/s after a small duration of 0.01 sec. what was the force applied on the ball when it hits the wall?
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Answer 1

Answer:

MASS= 150/1000kg

V=20m/s

U=12m/s

t=0•01second

f=m×a

where a is not give se have to find a

a=v_u/t

a=800

now force= m×a

m=150/1000

and a= 800

so F=M×a

F=150/1000×800

F=120 NEWTON

SO F=120 N

ANSWER