Question

A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg...

A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of 8.5 m/s. After the collision, the 0.20-kg puck has a speed of 5.1 m/s at an angle of

θ = 53°

to the positive x-axis.

(a) Determine the velocity of the 0.30-kg puck after the collision.

magnitude     m/s
direction ° from the positive x-axis


(b) Find the fraction of kinetic energy lost in the collision.

KE|
KEi

=  %

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