Q140
Which of the following statement is correct?
A.
The kinetic energy of a body during impact remains constant
B.
The kinetic energy of a body before impact is equal to the kinetic energy of a body after impact
C.
The kinetic energy of a body before impact is less than the kinetic energy of a body after impact
D.
The kinetic energy of a body before impact is more than the kinetic energy of a body after impact
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
During an impact, some of the kinetic energy is lost due to deformation, heat, and sound. As a result, the kinetic energy of a body before impact is typically more than the kinetic energy after the impact.
This loss of energy depends on the coefficient of restitution and the nature of the materials involved in the impact.