Question

During an "elastic collision " ,
a) there is no loss of kinetic energy
b) the bodies are perfectly elastic
c) temporarily some of the kinetic energy is used to deform the bodies
d) after collision the bodies regain the original shape keeping the total energy constant

• A. only "a" is true
• B. a, c, d are true
• C. b, c, d are true
• D. a, b, c ,d are true

Answer 1

The correct option is D a, b, c ,d are true

In an elastic collision, e is equal to 1. Therefore, the kinetic energy used in causing deformation of the bodies is recovered completely in the reformation since the reformation is complete. So no energy is lost.