physics unit 2 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: abbeyhuttonCreated on: 01-04-15 20:28 what is the unit of distance? metres, M 1 of 12 what is the speed of a runner who covers 400m in 50s? 8 metres per second or m/s 2 of 12 what is the difference between speed and velocity? velocity is speed in a particular direction 3 of 12 what is the unit for acceleration? metre per second squared 4 of 12 what does a horizontal line on a velocity-time graph represent? constant velocity, no acceleration 5 of 12 what would the velocity-time graph for a steadily decelerating object look like? a straight line with a negative velocity 6 of 12 what does an upwardly curving line represent on a: (a) distance-time graph and (b) velocity-time graph? (a) increasing velocity (b) increasing acceleration 7 of 12 what is the unit of force? newtons, N 8 of 12 in what direction does the force of weight act? downwards 9 of 12 what is the unit of resultant force? newtons, N 10 of 12 what is the resultant force of a 4N force and a 3N force acting in the same direction? 7N in the same direction 11 of 12 what happens to the acceleration of an object as the resultant force on it decreases? acceleration decreases 12 of 12
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