A spring with spring constant k = 3.75 N/cm is compressed 7.00 cm.  A 1.50 kg mass is placed next to the compressed spring.  When the spring is released, this mass moves without friction and collides with a stationary mass of 2.00 kg.  The two masses stick together and move without friction up a slope angled at 20.0 degrees.

  (a)(10 points)How far along the slope does the two-mass system travel? 

 (b) (5 points) If it takes 5.00*10-3seconds from the initial impact for the two masses to stick together, what is the magnitude of the average contact force between the two blocks? 

 (c) (5 points) The two-mass system will slide back down the slope and compress the spring.  What is the spring’s maximum compression?