A bowling ball of mass 6.8 kg moves in a
straight line at 3.08 m/s.
How fast must a Ping-Pong ball of mass
1.391 g move in a straight line so that the two
balls have the same momentum?

Question

A bowling ball of mass 6.8 kg moves in a
straight line at 3.08 m/s.
How fast must a Ping-Pong ball of mass
1.391 g move in a straight line so that the two
balls have the same momentum?

nikato · Answer

remember

momentum= mass x velocity

nikato · Answer

first find the momentum of the bowling ball
P= (6.8)(3.08)
=20.944

nikato · Answer

next, convert the mass of ping pong ball to kg by dividing by 1000
and get 0.001391kg

and since its the same momentum, itll be 20.944 

plug it into formula

20.944= (0.001391)v

divide both sides by 0.001391 to find v