Two metal balls of masses 10kg and 8kg are moving In the same directio

1.	Two metal balls of masses 10kg and 8kg are moving In the same direction with velocities 10m/s and 4m/s respectively. They stick together after collision. Find their common velocity after collision. If they are moving 1. In the same direction, 2. In opposite direction before collision.
Answer» m₁ = 10kg, m₂= 8kg u₁ = 10m/s and u₂= 4m/s. 1. v₁ = v₂ = v, common velocity. m₁u₁ +m₂u₂ = m₁v₁+ m₂v₂ 10 × 10 + 8 × 4 = (10 + 8)v or v = 7.33m/s 2. m₁u₁ – m₂u₂ = (m₁ + m₂)v 10 × 10 – 8 × 4 = (10 + 8)v v = 3.778m/s.

Two metal balls of masses 10kg and 8kg are moving In the same direction with velocities 10m/s and 4m/s respectively. They stick together after collision. Find their common velocity after collision. If they are moving 1. In the same direction, 2. In opposite direction before collision.

Answer»

m₁ = 10kg, m₂= 8kg

u₁ = 10m/s and u₂= 4m/s.

1. v₁ = v₂ = v, common velocity.

m₁u₁ +m₂u₂ = m₁v₁+ m₂v₂

10 × 10 + 8 × 4 = (10 + 8)v

or v = 7.33m/s

2. m₁u₁ – m₂u₂ = (m₁ + m₂)v

10 × 10 – 8 × 4 = (10 + 8)v

v = 3.778m/s.