Question

A metal ball of mass 2 kg moving with speed 10 m/s collides head on with another stationary ball of mass 4 kg. If after collision both balls move together, then loss in kinetic energy of system due to collision will be

Answer 1

Answer:

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Answer 2

Explanation:

Given A metal ball of mass 2 kg moving with speed 10 m/s collides head on with another stationary ball of mass 4 kg. If after collision both balls move together, then loss in kinetic energy of system due to collision will be

• So given mass of metal ball m1 = 2kg
• Speed = 10 m/s
• Mass of stationary ball m2 = 4kg
• Applying law of conservation of momentum we get
•                   v = m1v1 + m2v2 / m1 + m2
•                     = 2 x 10 + 4 x 0 / 2 + 4
•                            = 20 / 6
•                            = 3.33 m/s
• Now we have loss of energy
•                      = ½ m1v1^2 + ½ m2v2^2 – ½ (m1 + m2)v^2
•                        = ½ x 2 x (10)^2 + ½ x 4 (0)^2 – ½ (2 + 4)(3.33)^2
•                         = 100 – 33.2667
•                               = 66.7333 J

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https://brainly.in/question/3866920