Answer the following questions related to the concept of kinetic energy.
PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy
Problem
Answer the following questions related to the concept of kinetic energy.
(i) Define kinetic energy.
(ii) Using the proportionality of kinetic energy with mass and the square of speed, explain qualitatively how the kinetic energy of an object changes in each of the following situations:
(a) its mass is doubled while its speed remains unchanged,
(b) its speed is doubled while its mass remains unchanged,
(c) its speed is tripled while its mass is halved.
(iii) State the SI unit of kinetic energy.