Question

Which, if either, has greater momentum: a 1-kgball moving at 2m/s or a 2-kg ball moving at 1m/s
Which has greater kinetic energy?

Answer 1

Answer:

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Explanation:

Given: Coefficient of restitution e = 2 - 3

Velocity of mass 1 kg after the collision is given

by

V₁ - (m1 — em2)u + (1+e)m,u2 m₁ + m₂

(1 2 3 Or V₁ = 2 x 2) × 12 + (1+ × 2 × (-24) 3 1+2

-28 m/s

Velocity of mass 2 kg after the collision is given

by

V₂ = (m_emı)u2+(1+e)míu m₁ + m2

Or V₂ =

2 2 (2 – ² × 1) × (-24) + (1 + ²) × 1 × (12) - 3 3) = − 4 m/s