Question

Two bodies have same kinetic energy. They are stopped by applying same retarding force. Which body will stop earlier? ​

Answer 1

Answer:

Explanation:

Energy equals force times distance. Therefore, the two bodies will be brought to rest after traversing equal distances. Since the lighter body must initially be moving faster than the heavier in order for their kinetic energies to be equal, it will traverse that distance faster than the heavier. Therefore, it will stop first.

Answer 2

The explanation to the above question is given below

• If two bodies have the same kinetic energy and are stopped by applying the same retarding force, then the object which has less mass will gets stopped earlier.
• Kinetic energy is denoted by 1/2mv². The one which has more mass and less velocity will get stopped later provided the force remain the same.
• The body which has less mass, then force applied on the body will produce more retardation so the time required to make it stop will be less, so it will stop earlier compared to the body which has more mass.
• So among the two-body, the one which has less mass will get stop faster than the body having higher mass.