EASY
9th CBSE
IMPORTANT
Earn 100

What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.

Important Questions on Work and Energy

EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Long Answer Type Questions>Q 58
If 784 J of work was done in lifting a 20 kg mass, calculate the height through which it was lifted. g=9.8 ms2
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 59
A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car:
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 60
A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the kinetic energy of the car:
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 61
In case of negative work, the angle between the force and displacement is:
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 62
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same:
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 63
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. If the value of g be 10 ms2, the work done by the girl against the gravitational force will be:
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 64
The work done on an object does not depend on the:
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 4 - Work and Energy>Multiple Choice Questions (MCQs)>Q 65
Water stored in a dam possesses: