1. Definition

• Speed ➙ Rapidity of movement or action. The rate at which something moves.

• Distance ➙ How far something has travelled

• Displacement ➙ Distance with direction

• Total distance travelled ➙ The total distance an object has travelled over a period of time.

• Time ➙ The indefinite continued progress of existence and events in the past, present and future regarded as a whole

• Velocity ➙ The speed of something in a given direction

• Average speed ➙ The speed that is calculated from an object that travels at different speeds in different times

• Acceleration ➙ The rate at which an object increases its speed

• Deceleration ➙ The rate at which an object increases its speed

2. Formulae ( Relationship )

- Speed = distance/time

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This can be rearranged to make it easier to solve it things such as

{ Distance = Speed x Time or Time = Distance / Speed }

If any one of them were to be unknown, use the known values to calculate the following.

- Distance - Time graph

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- Speed - Time graph

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3. Key learning points from motion detector activity

• Graphs for:

Distance/Time=Speed

Speed/Distance=Acceleration

Speed/Time=Velocity

• The direction of movement affects whether the graph slopes upwards or downwards ( velocity ).

• Speed ≠ Velocity, Speed is the rate at which an object moves, however velocity is the measurement of how fast an object is moving.

Done by : Teri, Jasmine, Ada, Yong Jie, Kang Xiong and Bryan

Great work - certainly a team's effort.

ReplyDeleteSuggestion for improvement:

Formulae to include:

total distance travelled