Momentum And Collisions 3

Question

A 0.05 kg ball is thrown straight up into the air with an initial speed of 13 m/s. Find the momentum of the ball at the following locations.

 

(a) at its maximum height

kg·m/s

 

(b) halfway to its maximum height

kg·m/s

Answer 1

a) 0

 

b)2as= vf² -v0 ²

so 

s= v0² /2a (all the way)

 

so

 

half way= v0²/4a= (v² -v0²)/2a

 

v is velocity at he half way

 

=>  v= 9.19 m/s

=> p=mv=0.05 x9.19=0.46