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) 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. 4) 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. 5) It is safer to lie down on a frozen lake than it is to stand up. Why? a) You weigh less b) Your weight is spread over a smaller area c) Your weight is spread over a larger area d) Heat from your shoes melts the ice 6) 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. 7) 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. 8) 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. 9) 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. 10) 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 11) The moment of a force is: a) its turning force. b) how long it takes to work. c) how far it moves. d) the distance of a force from a pivot. 12) You are opening a can of paint with a screwdriver. You apply a force of 10 N, 20 cm from the pivot. What is the moment of the force? a) 2000 Ncm b) 200 Nm c) 200 Ncm d) 20 Nm 13) What is a seesaw that is ‘in equilibrium’? a) a seesaw with both people the same distance from the middle b) a seesaw with the same weight on each side c) a seesaw with the same moment on each side d) a wooden seesaw 14) What is the distance from the pivot of the boy on the seesaw? Boy: 250 N x ? m Girl: 500 N x 2 m a) 1 m b) 2 m c) 3 m d) 4 m 15) Why is Sam's bike so dam quick? a) It looks cool b) It has little Friction c) It has little Air Resistance d) It has little gerbils running in wheels inside it 16) Why is it safer to wear trainers than flip flops on an wet day? a) They have more air resistance b) They have more friction c) They have less friction d) You would look like an idiot 17) A tugboat pulls the ship with a force of 25 000 N. The ship does not move because of the force of friction acting on it is: a) more than 25 000 N b) 25 000 N c) more than zero but less than 25 000 N d) zero 18) Once the ship is off the beach, the tugboat continues to pull the ship with a force of 25 000 N. The ships speed is now increasing. What is the force of friction now? a) zero b) more than zero but less than 25 000 N c) 25 000 N d) more than 25 000 N

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