Motion 0.0 / 5 ? PhysicsForces and MotionIGCSEAQA Created by: mackymooCreated on: 22-04-17 22:54 Distance time graphs The distance of a body from a starting point against time taken. 1 of 18 Speed 1 The distance travelled each second. 2 of 18 Gradient The line of a distance time graph represents speed. 3 of 18 Gradient The steeper the gradient, the greater the speed. 4 of 18 Stationary If an object is stationary, the line on the distant time graph is horizontal. 5 of 18 Constant speed The line on the distance time graph is a straight line that slopes upwards. 6 of 18 Speed 2 m/s = distance travelled in metres/time taken in seconds 7 of 18 Velocity 1 The speed in a given direction. If the object changes direction it changes velocity, even if its speed stays the same. 8 of 18 Velocity 2 If the object changes, it means it accelerating. 9 of 18 Velocity 3 Velocity is a vector because it has direction as well as a magnitude. 10 of 18 Speed 3 Speed is a scalar because it is non directional. 11 of 18 Acceleration Acceleration = change in velocity/time taken for change 12 of 18 Negative acceleration (Velocity and acceleration graphs) Means the object is decelerating. 13 of 18 Velocity time graphs Shows the velocity of an object against time taken. 14 of 18 Gradient of velocity time graphs Represents acceleration. 15 of 18 The steeper the gradient on a velocity time graphs The great the acceleration. 16 of 18 Horizontal line on a velocity time graphs The acceleration is 0, therefore the object is travelling at steady speed. 17 of 18 Area under velocity time graphs Represents the distance travelled in a given time. The bigger the area the greater the distance travelled. 18 of 18
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