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Science
9th -
10thgrade
IGCSE Physics MCQs 03 - Forces and Motion
15 questions
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- 1. Multiple Choice
Which statement correctly describes the effects of placing a heavy load in a car?
It is easier to accelerate the car and easier to bring the car to rest.
It is easier to accelerate the car but more difficult to bring the car to rest.
It is more difficult to accelerate the car and more difficult to bring the car to rest.
It is more difficult to accelerate the car but easier to bring the car to rest.
- 2. Multiple Choice
A mass of 6.0 kg rests on the surface of a planet. On this planet, g = 20 N/kg.
What is the weight of the object?
0.30 N
0.60 N
60 N
120 N
- 3. Multiple Choice
A space probe is taken from the Earth to Mars. The force of gravity on the surface of Mars is less than the force of gravity on the surface of the Earth.
How do the weight and the mass of a space probe on the surface of Mars compare to their values when the probe is on the surface of the Earth?
Mars Weight: decreased; Mars mass: decreased
Mars Weight: decreased; Mars mass: unchanged
Mars Weight: unchanged; Mars mass: decreased
Mars Weight: unchanged; Mars mass: unchanged
- 4. Multiple Choice
A satellite orbits the Earth at constant speed in circular orbit. Which statement is correct?
The resultant force on the satellite is zero.
The resultant force on the satellite is towards the Earth.
The resultant force on the satellite is away from the Earth.
The resultant force on the satellite is in the direction of motion.
- 5. Multiple Choice
Two forces P and Q act on an object. Which diagram shows the resultant of these two forces?
- 6. Multiple Choice
The acceleration of the ball decreases.
The acceleration of the ball increases.
The speed of the ball decreases.
The gravitational force on the ball decreases.
- 7. Multiple Choice
The horizontal speed is greater on the Moon and the ball hits the floor 4.0 m in front of the spring.
The horizontal speed is greater on the Moon and the ball hits the floor more than 4.0 m in front of the spring.
The horizontal speed is the same on the Moon and the ball hits the floor 4.0 m in front of the spring.
The horizontal speed is the same on the Moon and the ball hits the floor more than 4.0 m in front of the spring.
- 8. Multiple Choice
Which choice describes speed and velocity?
Speed: scalar | Velocity: scalar
Speed: scalar | Velocity: vector
Speed: vector | Velocity: scalar
Speed: vector | Velocity: vector
- 9. Multiple Choice
Four balls with different masses are dropped from the heights shown. Air resistance may be ignored. Which ball has the smallest average speed?
- 10. Multiple Choice
An object of mass 2.0 kg is taken from the Earth, where the gravitational field strength is 10 N/kg, to the Moon, where the gravitational field strength is 1.6 N/kg.
Which row is correct?
Earth weight: 0.20 N | Moon weight: 0.80 N
Earth weight: 0.20 N | Moon weight: 3.2 N
Earth weight: 20 N | Moon weight: 0.80 N
Earth weight: 20 N | Moon weight: 3.2 N
- 11. Multiple Choice
What is the best description of the meaning of the 'mass' of an object?
the space occupied by the object
the force that gravity exerts on the object
the resistance of the object to changes in motion
the closeness of packing of the molecules in the object
- 12. Multiple Choice
A ball is thrown vertically upwards through the air. Air resistance acts on the ball. Which graph shows how its speed varies with time?
- 13. Multiple Choice
An object is on the surface of the Earth. Which statement describes the weight of the object?
the quantity of material that the object contains
the quantity of space that the object takes up
the gravitational force acting on the object
the object's resistance to a change in its motion
- 14. Multiple Choice
The gravitational field strength on the Earth is greater than the gravitational field strength on the Moon. The Earth has an atmosphere, but the Moon does not.
Which speed-time graph represents the motion of a light ball dropped from a great height near the surface of the Earth and near the surface of the Moon?
- 15. Multiple Choice
Force: decreases | Acceleration: decreases
Force: decreases | Acceleration: increases
Force: increases | Acceleration: decreases
Force: increases | Acceleration: increases
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