Question

8. How does the kinetic energy of a moving body depend on its (i) speed, and (ii) mass?
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Answer 1

Answer:

Kinetic energy can be written as 1/2mv^2.

Kinetic Energy is directly proportional to speed of the particle or the velocity of the particle. If the velocity increases, K.E will be more.

K.E is also directly proportional to the mass of the particle. Increased mass will have more K.E

Hence we can conclude that,

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.