Question:

The ball of mass ${ m }_{ b }$ is thrown at the suspended block of mass ${ m }_{ B }$ with a velocity of ${ v }_{ b }$. If the time of impact between the ball and the block is Δt, determine the average normal force exerted on the block Given: kN = ${ 10 }^{ 3 }$ N , ${ m }_{ b }$ = 2 kg , ${ v }_{ b }$ = 4 m/s , g = ${ 9.81 m/s }^{ 2 }$ , ${ m }_{ B }$ = 20 kg , e = 0.8 , Δt = 0.005 s