In a theme park ride, passengers in a car are initially at rest at the top of the track.
The car then travels down and round a circular loop in the track.

1.   ?    X: KE only; Y: PE only
2.   ?    X: PE only; Y: KE only
3.   ?    X: KE only; Y: KE and PE
4.   ?    X: PE only; Y: KE and PE

When a 300 N force is applied to a box weighing 600 N, the box moves 3.0 m horizontally in 20 s.

1.   ?    45 W
2.   ?    90 W
3.   ?    900 W
4.   ?    1800 W

The diagram shows a small car of mass 500 kg approaching a hill. It moves up the hill with uniform speed.

1.   ?    5 x 10³ J
2.   ?    5 x 10⁴ J
3.   ?    1 x 10⁵ J
4.   ?    1 x 10⁶ J

Which method of energy release is affected by a change in the Earth's gravitational field?

1.   ?    Chemical
2.   ?    Geothermal
3.   ?    Hydroelectric
4.   ?    Nuclear

The diagram shows a curved track. A ball is released at point A.

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

In a hydroelectric power station, water from a reservoir falls down a large pipe before entering the turbines.
The turbines then turn the generator.
What is the overall energy conversion?

1.   ?    Kinetic energy into chemical energy
2.   ?    Kinetic energy into electrical energy
3.   ?    Potential energy into chemical energy
4.   ?    Potential energy into electrical energy

An experiment is carried out to measure the power of a student running up some stairs.
Which of the followings is not required for this experiment?

1.   ?    The time taken to run up the stairs.
2.   ?    The total horizontal distance of the stairs.
3.   ?    The total vertical height of the stairs.
4.   ?    The weight of the student.

A man of weight 800 N carries a load of 200 N up some steps 2 m high.

What is the total work done?

1.   ?    400 J
2.   ?    1 600 J
3.   ?    2 000 J
4.   ?    20 000 J

A body moving with a speed of 30 m/s has a kinetic energy of 1 800 J.

What is its mass ?

1.   ?    2 kg
2.   ?    4 kg
3.   ?    60 kg
4.   ?    120 kg

Which device is designed to convert electrical energy to sound energy?

1.   ?    Generator
2.   ?    Loudspeaker
3.   ?    Microphone
4.   ?    Motor

A crane moved its load diagonally, as shown.

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

Which quantity is not measured in joules (J) ?

1.   ?    Gravitational potential energy
2.   ?    Heat
3.   ?    Power
4.   ?    Work

Which quantity is calculated by multiplying the magnitude of the force by distance moved ?

1.   ?    Acceleration
2.   ?    Power
3.   ?    Pressure
4.   ?    Work

What are the energy changes in a battery-operated torch?

1.   ?    Chemical ->Electrical -> Light + Heat
2.   ?    Electrical -> Kinetic -> Light + Heat
3.   ?    Electrical -> Chemical -> Light + Heat
4.   ?    Kinetic ->Electrical -> Light + Heat

A ball, originally at point X, rolls down the hills shown in the diagram.

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

Which type of energy depends upon the speed of a moving body?

1.   ?    Chemical
2.   ?    Geothermal
3.   ?    Kinetic
4.   ?    Nuclear

One of the following represents some of the main energy changes which take place in a coal-fired power station.

The sequence is .....................

1.   ?    heat ---> kinetic ---> electrical
2.   ?    heat ---> light ---> electrical
3.   ?    heat ---> chemical ---> electrical
4.   ?    kinetic ---> electrical ---> potential

A car coasts to a stop on a level road with its engine switched off.

The biggest energy change is, therefore, from ......................

1.   ?    chemical to kinetic
2.   ?    heat to chemical
3.   ?    heat to kinetic
4.   ?    kinetic to heat

What are the units for work and for power?

1.   ?    A
2.   ?    B
3.   ?    C
4.   ?    D

A weightlifter lifts different weights to different heights.

When does he do the most work?

1.   ?    
2.   ?    
3.   ?    
4.   ?