Movement and Position (Forces and Motion)

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• Created by: Lucy S
• Created on: 01-04-13 16:12
• Movement and Position
• Speed
• Average speed = distance travelled / time taken.
• Units of speed : metres per second (m/s), kilometres per hour (km/h)
• Vector and Scalar Quantities
• Scalar quantities do not take direction into account.
• Speed
• Distance
• Vector quantities take both size and direction into account.
• Displacement
• Velocity
• Acceleration
• Distance-Time Graphs
• Gradient shows speed.
• Straight line shows a constant speed.
• A line curving upwards shows acceleration.
• Velocity-Time Graphs
• Gradient shows acceleration.
• Straight line shows a constant acceleration.
• Area under the graph shows distance travelled.
• Acceleration
• Acceleration = change in velocity / time taken.
• Units of acceleration: metres per second squared (m/s²)

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