WorksheetsWORK AND ENERGY
Total questions: 15
Worksheet time: 5mins
In case of negative work the angle between the force and displacement is
0 degree
45 degree
90 degree
180 degree
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are lo m above the ground, they have the same
Acceleration
Momentum
Potential Energy
Kinetic Energy
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 ms²)
6 × 10³ J
6 J
0.6 J
Zero
Which one of the following is not the unit of energy?
Joule
Newton Meter
Kilo Watt
Kilowatt Hour
The work done on an object does not depend upon the
Displacement
Force applied
Angle b/w force and displacement
Initial velocity of the object
Water stored in a dam possesses
No energy
Electrical energy
Kinetic Energy
Potential Energy
A body is falling from a height h. After it has fallen a height h/2, it will possess
Only potential energy
Only kinetic energy
Half potential and half kinetic energy
More kinetic and less potential energy
If speed of a car becomes 2 times, its kinetic energy becomes
4 times
8 times
16 times
12 times
Work done by friction
Increases kinetic energy of the body
Decreases kinetic energy of the body
Increase potential energy of the body
Decreases potential energy of the body
One joule work is said to be done when
a force on 1 N displaces a body by 1cm
a force of 1N displaces a body by 1m
a force of 1dyne displaces a body of 1cm
a force of 1dyne displaces a body of 1m
SI unit of power is
Watt
Joule
Newton
Meter
Mechanical energy of a body includes
Kinetic energy only
Potential only
kinetic and potential energy
None of these
Commercial unit of energy is
Joule
Kwh
Watt
Newton
Potential energy of a body depends on its
Position
Configuration
Position and configuration
Mass and velocity
Work done is product of ………….. and distance moved the direction of the force
Force
accelaration
velocity
time period
