WAEC - Physics (1996 - No. 9)
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
Explicació
M1U = (M1 + M2)V = 4.2 x 10 = (4.2 = 2.8)V
∴ V =
4.2 x 107.0
= 6m/s