Physics 4.0 / 5 based on 2 ratings ? PhysicsSpeedGCSEOCR Created by: CaitlinRyburnCreated on: 18-04-14 11:16 What is the formula for speed? average speed= distance/time 1 of 9 What does the gradient of a distance time graph tell us? the speed of the object, a higher speed means a steeper gradient 2 of 9 What does a straight line on a distance-time graph indicate? That the speed is constant 3 of 9 What does a curved line on a distance-time graph indicate? That the speed is changing 4 of 9 What is the area under a speed-time graph equal to? The distance travelled 5 of 9 What is the formula for acceleration? acceleration= change in speed (or velocity)/time taken 6 of 9 What is acceleration measured in? metres per second squared (m/s squared) 7 of 9 What is velocity? Why? A vector, because it has both size (speed) and direction 8 of 9 When two cars are moving past each other what is their relative velocity? (Two things) The sum of their individual velocities if they are going in opposite directions 9 of 9
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