Question

c) A rubber ball mass 10g strikes on a rigid wall with speed 20 ms and rebounds with
speed 15ms 1. If the time of collision is 0.01 second calculate,
i) initial momentum of the ball ii) final momentum of the ball
iii) the rate of change of momentum iv) the acceleration of the ball.
[4]​

Answer 1

Answer:

ExplaInitial normal velocity of ball toward horizontal surface, u=4sin30  

o

=2ms  

−1

 

Final normal velocity of ball toward horizontal surface, v=−4sin30  

o

=−2ms  

−1

 

Impulse imparted to ball, I=F.Δt=mΔV=m(v−u)=0.1[2−(−2)]=0.4kgms  

−1

 

Change in momentum, P=mΔV=0.4kgms  

−1

 

solutionnation:

Answer 2

Answer:

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Explanation:

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