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 an object 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 hrs b) 0.5 hrs c) 0.67 hrs d) 67 minutes 5) Balanced forces: a) make objects speed up b) make objects slow down c) do not change the speed of moving objects d) only affect sptationary objects 6) 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 7) What are forces X and Y? a) X is air resistance; Y is gravity b) X is air resistance and Y is friction c) X is gravity and Y is air resistance d) X is friction; Y is air resistance 8) 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 9) 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 10) 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 affect on air resistance 11) 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 & air resistance d) weight balances friction 12) 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 13) 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 start of the jump d) her air resistance increases as her speed increases 14) 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 air resistance d) his parachute opens 15) Which part of the graph shows when a car, on a journey, has stopped at traffic lights? a) V to W b) W to X c) X to Y d) Y to Z 16) This speed-time graph shows the speed of a skydiver. Which letter shows the part of the graph where forces on him are balanced? a) A b) B c) C d) D

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