Question

Two object of masses hundred gram and 200 gram are moving along the same line and direction with velocity of 2m per second and 1 m per second respectively they collide and after the collision the first object moves at a velocity of 1. 67 M per second determine velocity of second object

Answer 1

Momentum of both spear before collision =
m1 × u1 + m2 × u2
0.1 Kg × 2 m/s + 0.2 Kg × 1 m/s
0.2 Kg m/s + 0.2 Kg m/s
0.4 Kg m/s

Momentum of both spear after collision =
m1×v1 + m2×v2
0.1 × 1.67 + 0.2 × v2
0.167 + 0.2 v2

Total momentum after collision = Total momentum before collision
0.4 = 0.167 + 0.2 v2
0.4 - 0.167 = 0.2 v2
0.233 = 0.2 v2
0.233 ÷ 0.2 = v2
1.167 m/s = v2