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3821246
P2 U2 Motion
Descrição
GCSE Science Mapa Mental sobre P2 U2 Motion, criado por Abbie Edwards em 19-10-2015.
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science
gcse
Mapa Mental por
Abbie Edwards
, atualizado more than 1 year ago
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Criado por
Abbie Edwards
quase 9 anos atrás
14
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Resumo de Recurso
P2 U2 Motion
Distance-time graphs
The gradient of the line on a distance-time graph represents an object's speed.
The steeper the line on a distance-time graph, the greater the speed it represents.
We can use graphs to help us describe the motion of an object.
A distance-time graph shows the difference of an object from a starting point (y-axis) against time taken (x-axis)
The speed of an object is the distance travelled each second
The gradient of the line on a distance-time graph represents speed. The steeper the gradient, the greater the speed.
If an object is stationary, the line on a distance-time graph is horizontal.
If an object is moving at a constant speed, the line on a distance-time graph is a straight line that slopes up.
Velocity and acceleration
The velocity of an object is its speed in a given direction.
If the object changes direction it changes velocity, even if its speed stays the same.
If the velocity of an object changes, we say that ut accelerates.
If the value calcualted for acceleration is negative, the body is decelerating (slowing down). A deceleration is the same as a negative acceleration.
Velocity-time graphs
Using graphs
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