Motion - velocity and acceleration and related equations
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Scaler

• A quantity with only magnitude and units. e.g. Mass, Speed, Energy

Vector

• A quantity with magnitude, direction and units e.g. Velocity and Force

• Speed = Distance / Time

• Average speed = Total distance / Total Time

Displacement:

• How far an object has moved from a certain position.

• Positive and negative displacement show movement in opposite directions.

Acceleration:

• Rate of change of velocity

• It is also the gradient of a velocity-time graph
• A positive acceleration shows speeding up and vice versa.
• change in velocity / time
• Units = ms^-2

The equations:

• v = final velocity

• u = initial velocity
• a = acceleration
• t = time
• x = displacement
• v = u + at
• v² = u² + 2ax
• x = ut + 1/2 at²

Other Notes in this Category

1. Motion - velocity and acceleration and related equations
2. Newton's Laws of Motion

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