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
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
MEDIUM
9th CBSE
IMPORTANT
By how much will the kinetic energy of a body increase if its speed is doubled?
EASY
9th CBSE
IMPORTANT
Write an expression for the kinetic energy of a body of mass m moving with a velocity v.
EASY
9th CBSE
IMPORTANT
If the speed of a body is halved, what will be the change in its kinetic energy?
EASY
9th CBSE
IMPORTANT
On what factors do the kinetic energy of a body depend?
EASY
9th CBSE
IMPORTANT
Which would have a greater effect on the kinetic energy of an object: doubling the mass or doubling the velocity?
EASY
9th CBSE
IMPORTANT
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
EASY
9th CBSE
IMPORTANT

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

A man climbing a hill.