Question

A block of mass m = 3.00 kg slides down a 30.0∘ incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.50 kg which is at rest on a horizontal surface (Figure 1). (Assume a smooth transition at the bottom of the incline). The collision is elastic, and friction can be ignored. A) Determine the speed of the block with mass m = 3.00 kg after the collision. B) Determine the speed of the block with mass M = 7.50 kg after the collision. C) Determine how far back up the incline the smaller mass will go.

Answer 1

3-6 m 36 3

2 Sn30
Speed of 3 kg block after collision is 3.6 m/s

Speed of 7.5 kg block after collision is 4.8 m/s

The smaller mass go up the incline upto 1.322 m