EASY
9th CBSE
IMPORTANT
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What is the condition for a force to do work on an object?

Important Questions on Work and Energy

EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 10
Define the term “energy” of a body. What is the unit of energy?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 11
Is energy a vector quantity?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 12
Name two forms of mechanical energy.
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 13
Does the kinetic energy of a body depend on its direction of motion?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 14
By how much will the kinetic energy of a body increase if its speed is doubled?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 15
If the speed of a body is halved, what will be the change in its kinetic energy?
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 16
A body is thrown vertically upwards. What happens to its kinetic energy at its highest point?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 4 - Work and Energy>Exercise>Q 17
Flowing water can rotate a turbine. What type of energy is used up by the turbine?