A metal ball of mass 2 𝑘𝑔 moving with a velocity of 36 𝑘𝑚/ℎ has an head on collision with a stationary ball of mass 3 𝑘𝑔. If after the collision, the two balls move together, the loss in kinetic energy due to collision is

May 10, 2022

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Physics Problems

Question: A metal ball of mass 2 𝑘𝑔 moving with a velocity of 36 𝑘𝑚/ℎ has an head on collision with a stationary ball of mass 3 𝑘𝑔. If after the collision, the two balls move together, the loss in kinetic energy due to collision is

(A) 40 𝐽

(B) 60 𝐽

(D) 140 𝐽

Answer: Option (B)

Solution:

A metal ball of mass 2 𝑘𝑔 moving with a velocity of 36 𝑘𝑚/ℎ has an head on collision with a stationary ball of mass 3 𝑘𝑔. If after the collision, the two balls move together, the loss in kinetic energy due to collision is