Name: ______________________

Quiz 6

03/18/2005

Ch. 8

1) A puck of mass m = 4.0kg
is sliding on a frictionless surface at a speed V=3.50 m/s in the positive
x-direction and hits another puck of mass M = 5.0kg at rest at the origin. The collision lasts 0.02s. The larger mass leaves the collision with a
velocity of 3.00m/s in the positive x direction.

a) What is the final
velocity (magnitude and direction) of the smaller particle?

b) What is the total change
in kinetic energy during the collision?

c) Is the collision
elastic?

d) What is the impulse
applied to the smaller particle?

2) Three equal masses M are
placed at the corners of a right triangle with the right angle corner at the
origin. One particle at the origin _{}, one at _{}, and one at _{}.

a) Where is the center of
mass?

b) Where is the center of
mass if M=4 kg, *A*=1.6m, and *B*=2.4m?