physics velocity help?
A 0.110-kg hockey puck, moving at 35.0 m/s, strikes a 0.255-kg jacket that is thrown onto the ice by a fan of a certain hockey team. The puck and jacket slide off together. Find their velocity. (Take the positive direction to be that of the initial direction of the puck.)
More Questions From This User See All
Answers & Comments
Verified answer
m1 = mass of the puck = 0.110 kg
m2 = mass of the jacket = 0.255 kg
v1 = initial velocity of the puck = 35 m/s
v2 = velocity of the puck and the jacket after collision = ?
The system (puck and the jacket) will have the same momentum before and after the collision because no external force is acting on them.
=> m1v1 + m2(0) = m1v2 + m2v2
=> m1v1 = v2(m1 + m2)
=> v2 = m1v1 / (m1 + m2)
=> v2 = (0.110 x 35) / (0.110 + 0.255) = 10.548 m/s
try this www.physicssource.ca