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) Why is it safer to wear trainers than flip flops on a 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 10) Why does this car travel quickly? a) It looks cool. b) It has no friction. c) The shape reduces air resistance d) The shape increases drag. 11) What makes this bird an ideal diving bird? a) It can hold its breath underwater. b) It can make itself into a smooth narrow shape. c) It has strong wings. d) Its feathers are lubricated well.  12) As a submarine travels on the surface, which TWO resistance forces are acting on it? a) water resistance below the surface b) water resistance above the surface c) air resistance above the surface d) magnetic force  13) Another word for air and water resistance is: a) gravity b) magnetism c) upthrust d) drag 14) Drag acts in the a) same direction as movement b) opposite direction to movement 15) Forces are measured in a) metres per second b) kilograms c) Newtons d) volts

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