EASY
8th ICSE
IMPORTANT
Earn 100

If either of the displacement or the force applied changes, how does the amount of work done get affected?

Important Questions on Energy

EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q 5
A force of 45 N displaces a chair by 0.5 m. What is the amount of work done?
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q A
Mechanical energy is of two types - potential energy and kinetic energy.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q A
Kinetic energy of an object is the energy stored in it.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q A
Kinetic energy of an object depends on its mass and velocity.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q A
The energy stored in an object due to its raised position is known as elastic potential energy.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q A
A ball thrown from a balcony possesses kinetic energy.
EASY
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q B
A ball of mass 400 g is thrown at a speed of 2 m s-1. Determine its kinetic energy.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 4 - Energy>Check your progress>Q B
A motorbike moving at a speed of 12 ms has a kinetic energy of 3600 J. Determine its mass.