On a frictionless horizontal air table, puck A (with mass 0.247 kg ) is moving t

Question

On a frictionless horizontal air table, puck A (with mass 0.247 kg ) is moving toward puck B (with mass 0.371 kg ), which is initially at rest. After the collision, puck A has a measured velocity of 0.125 m/s to the West, and puck B has a measured velocity of 0.649 m/s to the East.

A.What was the velocity of puck A before the collision?   Give the horizontal component of velocity, with East positive.

B.Calculate ?K, the change in the total kinetic energy of the system that occurs during the collision.

Explanation / Answer

Original KE = 1/2 x 0.247 x V^2

We have to find V
Use conservation of momentum

0.247 V = 0.371x 0.649

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.