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A ball of mass 60g is dropped from a height of 3.4m it lands on top...

A ball of mass 60g is dropped from a height of 3.4m it lands on top and the surface is not frictionless (Kinetic friction is 0.3). The hight of the ramp is 1.8m and the ramp is tilted at an angle of 20 degrees.

a) What is the velocity of the ball at the top of the ramp

b) At the bottom of the ramp it collides with and sticks to a ball of mass 73g. What is the velocity after collision?

c) They are stuck together when the ball collides with a spring of spring constant 300N/m. How much will they compress it?

d) Then they go up the ramp. How high will they go?

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