EASY
9th CBSE
IMPORTANT
Earn 100

What are the units of (a) work, and (b) energy?

Important Questions on Work and Energy

EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 8
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 9
By how much will the kinetic energy of a body increase if its speed is doubled?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 10
Write an expression for the kinetic energy of a body of mass m moving with a velocity v.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 11
If the speed of a body is halved, what will be the change in its kinetic energy?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 12
On what factors do the kinetic energy of a body depend?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 13
Which would have a greater effect on the kinetic energy of an object: doubling the mass or doubling the velocity?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 14
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Very Short Answer Type Questions>Q 15

State whether the following object possess kinetic energy, potential energy, or both:

A man climbing a hill.