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Forces and Motion, Calculating Acceleration, Conditions for Acceleration,…
Forces and Motion
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Graphs
Speed - Time Graphs: These line graphs plot the speed an object is travelling at against the time during which it is travelling at that particular speed.
Distance - Time Graphs: These line graphs plot the distance an object travels against the time it takes to travel that particular distance
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What Are They?
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Motion: An object is said to be in motion when its position, in respect to a fixed point in space or a fixed object/point in its surroundings, changes over time.
Acceleration is a measure of the rate of change of velocity; the speeding up and slowing down of an object is considered acceleration.
Acceleration is calculated by subtracting the initial velocity of an object in a specific time interval from the final velocity and then dividing it by the time during which this change occurred. The formula used is (v-u)/t where 'v' is final velocity, 'u' is initial velocity, and 't' indicates the time taken for the change in velocity.
An object is said to accelerate when its speed changes and/or the direction in which it is moving changes. When an object speeds up, its acceleration is positive and when it slows down, its acceleration is negative.
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