Exam questions
1. Distance travelled can be found from the
A area under a velocity-time graph
B area under an acceleration-time graph
C gradient of a force-time graph
D gradient of a velocity-time graph
(Total 1 mark)
2. The graph shows how velocity varies with time for an object. The total distance travelled by the object in 4 s is
A 20 m
B 40 m
C 60 m
D 80 m
(Total 1 mark)
3. A car of known mass has a constant acceleration. The resultant force acting on the car can be found by applying
A Newton’s first law
B Newton’s second law
C Newton’s third law
D Stokes’s law
(Total 1 mark)
4. Which of the following is a scalar quantity?
A acceleration
B displacement
C force
D work
(Total 1 mark)
5. A car pulls a trailer of weight 2500 N with a force of 20 N for a distance of 8 km along a horizontal road. How much work is done by the car in pulling the trailer?
A 160 J
B 20 000 J
C 160 000 J
D 20 000 000 J
(Total 1 mark)
6. A ball is thrown straight up in the air and caught when it comes down. Which graph best shows the velocity of the ball from the moment it is released until just before it is caught?
(Total 1 mark)
7. Newton’s third law tells us that
A actions usually have a reaction
B weight and normal contact force are always equal and opposite
C moving with constant velocity is the same as being at rest
D forces always arise in pairs
(Total 1 mark)
8. Which set of quantities is all scalar?
A acceleration, displacement, velocity
B energy, mass, power
C extension, force, gravitational potential energy
D weight, kinetic energy, work
(Total 1 mark)
9. Champagne bottles are often opened by ‘firing’ the cork out of the bottle. The world record for the horizontal distance travelled by a fired cork is 53 m. The high pressure inside the bottle produces an average force of 150 N on the cork as it leaves the bottle. This force acts on the cork over a distance of 2.5 × 10–2 m. (a) Show that the work done on the cork is about 4 J.
A area under a velocity-time graph
B area under an acceleration-time graph
C gradient of a force-time graph
D gradient of a velocity-time graph
(Total 1 mark)
2. The graph shows how velocity varies with time for an object. The total distance travelled by the object in 4 s is
A 20 m
B 40 m
C 60 m
D 80 m
(Total 1 mark)
3. A car of known mass has a constant acceleration. The resultant force acting on the car can be found by applying
A Newton’s first law
B Newton’s second law
C Newton’s third law
D Stokes’s law
(Total 1 mark)
4. Which of the following is a scalar quantity?
A acceleration
B displacement
C force
D work
(Total 1 mark)
5. A car pulls a trailer of weight 2500 N with a force of 20 N for a distance of 8 km along a horizontal road. How much work is done by the car in pulling the trailer?
A 160 J
B 20 000 J
C 160 000 J
D 20 000 000 J
(Total 1 mark)
6. A ball is thrown straight up in the air and caught when it comes down. Which graph best shows the velocity of the ball from the moment it is released until just before it is caught?
(Total 1 mark)
7. Newton’s third law tells us that
A actions usually have a reaction
B weight and normal contact force are always equal and opposite
C moving with constant velocity is the same as being at rest
D forces always arise in pairs
(Total 1 mark)
8. Which set of quantities is all scalar?
A acceleration, displacement, velocity
B energy, mass, power
C extension, force, gravitational potential energy
D weight, kinetic energy, work
(Total 1 mark)
9. Champagne bottles are often opened by ‘firing’ the cork out of the bottle. The world record for the horizontal distance travelled by a fired cork is 53 m. The high pressure inside the bottle produces an average force of 150 N on the cork as it leaves the bottle. This force acts on the cork over a distance of 2.5 × 10–2 m. (a) Show that the work done on the cork is about 4 J.