P3 0.0 / 5 ? PhysicsForces and MotionGCSEAll boards Created by: heleniharrisonCreated on: 18-01-14 19:39 What is the unit of speed? m/s or km/h 1 of 10 A car travels 600m in 20 seconds. What is its average speed? 30m/s 2 of 10 The speed of a car changes from 20m/s to 10m/s. Is it accelerating or deccelerating? Decelerating. 3 of 10 Find the acceleration of a cat that goes from 0 to 5m/s in 2 seconds when chasing a mouse. 2.5m/s(squared) 4 of 10 Two cars, A and B, have the same engine. Car A has a larger mass than Car B. Which has the greater acceleration? Car B. 5 of 10 What do you call the distance travelled by a car in stopping after the brakes have been applied? Braking Distance. 6 of 10 Sam lifts an 8N weight and a height of 3m. Ali lifts a 10N weight and a height of 4m. Who does more work? Ali. 7 of 10 Suggest why a car uses more fuel per kilometre when carrying a heavy load. A larger mass means the car must gain more kinetic energy, so it uses more fuel. 8 of 10 Which two car safety features protect a drivers chest in an accident? The seatbelt and the airbag. 9 of 10 What effect does a streamlined shape have on the motion of a car? It increases the cars top speed. 10 of 10
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