Speed And Motion 0.0 / 5 ? PhysicsSpeedGCSEOCR Created by: EmanuelleCreated on: 12-09-16 18:18 What two quantities are needed to calculate speed? Speed = d ÷ t (distance ÷ time) 1 of 5 What does the gradient of a distance- time graph represent? The slope represents the increasing speed of an object. 2 of 5 State the equation used to calculate acceleration a = (V-U) ÷ T (Final speed - Initial speed ÷ time) 3 of 5 What is acceleration and deceleration? It is a measure of how quickly an object speeds up or slows down. 4 of 5 What does an acceleration of -5m/s² tell you about the motion of the object? This tells you that the object is going in reverse direction, it is decelerating and going back to it's starting point. 5 of 5
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