Elastic collision:
momentum initial = momentum final
Kinetic energy is conserved
2.90-kg ball,
Since kinetic energy is conserved, velocity transferred to other ball so final velocity is v₁ = 0 m/s
8.80 kg ball
Since kinetic energy is conserved, velocity transferred to this ball so final velocity is v₂ = 4.69 m/s right
For perfectly inelastic, masses are combined and they stick together. One final velocity, v
m₁ = 2.90 kg
v₁ᵢ = 4.69 m/s right
m₂ = 8.80 kg
v₂ᵢ = 0 m/s
v = ? m/s
Momentum is conserved
m₁v₁ᵢ + m₂v₂ᵢ = v(m₁ + m₂)
v = (m₁v₁ᵢ + m₂v₂) / (m₁ + m₂)
v = (2.90 kg * 4.69 m/s + 0) / (2.90 kg + 8.80 kg)
v = 1.16 m/s
