9K Quick Quiz
1 The speed of a car is a measure of how:
A far it is travelling.
B fast it is travelling.
C long it is travelling.
D high it is travelling.
2 A bus travelled a distance of 20 km in 2 hours. Its speed was:
A 0.1 km/h. B 40 km/h.
C 20 km/h. D 10 km/h.
3 The mean speed of something is:
A its fastest speed.
B the total distance it travels divided by the time taken.
C its slowest speed.
D its speed limit.
4 If a car travels at 50 mph, how long will it take to travel 75 miles?
A 1.5 hours B 0.5 hours
C 0.67 hours D 67 minutes
1 Balanced forces:
A make objects speed up.
B make objects slow down.
C do not change the speed of moving objects.
D only affect stationary objects.
2 This drawing shows two forces on a car. What will happen to the speed of the car?
A It will accelerate.
B It will slow down.
C It will decelerate.
D It will stay the same.
3 What are forces X and Y?
A X is air resistance, Y is gravity.
B X is air resistance, Y is friction.
C X is gravity, Y is air resistance.
D X is friction, Y is air resistance.
4 An object will accelerate quickly if it has:
A a large force and a small mass.
B a large force and a large mass.
C a small force and a large mass.
D a small force and a small mass.
1 The air resistance of a car can be reduced by:
A making the car bigger.
B making the car heavier.
C giving it a streamlined shape.
D putting a roof rack on it.
2 Which statement about air resistance is true?
A If speed increases, air resistance decreases.
B If speed increases, air resistance increases.
C If speed decreases, air resistance increases.
D Speed has no effect on air resistance.
3 A car needs energy to keep moving because:
A everything needs a force to keep moving.
B gravity is trying to slow it down.
C it needs a force to balance friction and air resistance.
D weight balances friction.
4 Air resistance on a moving object is caused by:
A air being attracted to the object.
B air particles moving around the object.
C the wind.
D air particles hitting the object.
1 There are changing forces on a skydiver during a jump. Which of these statements is not true?
A Her weight stays the same.
B Her air resistance stays the same.
C Her air resistance is very small at the beginning of the jump.
D Her air resistance increases as her speed increases.
2 A skydiver reaches a maximum speed when:
A his air resistance has increased to balance his weight.
B his air resistance has decreased to balance his weight.
C his weight has increased to balance the air resistance.
D his parachute opens.
3 This distance–time graph shows Mrs Martin driving her children to the cinema. Which part of the graph shows where she stopped at some traffic lights?
A V to W
B W to X
C X to Y
D Y to Z
4 This speed–time graph shows the speed of a skydiver. Which letter shows part of the graph where the forces on him are balanced?