Physics - Motion 0.0 / 5 ? PhysicsForces and MotionIGCSEAQA Created by: becky.65Created on: 24-03-16 10:33 What is the velocity of an object? Its speed in a given direction 1 of 6 What happens if the velocity of a body changes? We say that it accelerates 2 of 6 Why is velocity a vector? Because it has direction as well as magnitude 3 of 6 Why is speed scalar? Because it is non-directional 4 of 6 What does the gradient of the line on a velocity-time graph represent? Acceleration 5 of 6 What does it mean if the line on a velocity-time graph is horizontal? The acceleration is zero, therefore the object is travelling at a steady speed 6 of 6
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