A body of mass 4.2kg moving with velocity 10ms-1 due east, hits a stationary body of mass 2.8kg. If they stick together after collision and move with velocity V due east, calculate the value of V
- 3ms-1
-
6ms-1
- 7ms-1
- 15ms-1
- 17ms-1
The correct answer is: B
Explanation
M1U = (M1 + M2)V = 4.2 x 10 = (4.2 = 2.8)V∴ V =
4.2 x 107.0
= 6m/s