Investigating motion (Edexcel GCSE Physics Combined Science): Flashcards

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Investigating motion
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What does the trolley ramp experiment investigate?

How mass and force affect the motion of a trolley

Which masses are measured in the equipment setup?

Trolley, hanging masses, and hook

How is the ramp height adjusted?

Until the trolley just starts to move freely when released

Why is a line marked before the first light gate?

To ensure same start position and distance every time

How is the trolley attached to the hanging mass?

Using a string that passes over a pulley at the end of ramp

What do light gates measure?

Speed of the trolley as it passes through

What does the first light gate record?

Initial speed

What does the second light gate record?

Final speed

Formula for acceleration

Acceleration = final speedinitial speedtime\frac{\text{final speed} - \text{initial speed}}{\text{time}}

Less accurate timing tool than light gates

Stopwatch

How to investigate the effect of trolley's mass?

Add masses to the trolley and repeat the experiment

How to change the accelerating force?

Vary the mass on the hook

Newton's Second Law formula

F=maF = ma

In Newton's Second Law, acceleration is ___ to force

Directly proportional

In Newton's Second Law, acceleration is ___ to mass

Inversely proportional

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