Motion Flashcards

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1
Q

What is Speed?

A

Speed = Distance Travelled / Time Taken

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2
Q

How does Distance differ with Displacement?

A

Distance is the total length, displacement is the shortest distance and direction from the starting point.

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3
Q

What is Velocity?

A

Velocity = Displacement / Time

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4
Q

What is Acceleration?

A

a = (v - u) / t

acceleration = (final velocity - initial velocity) / time taken

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5
Q

What can a distance-time graph show you?

A

Distance, Time, Speed (as the gradient)

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6
Q

What does a speed-time graph show you?

A

The gradient shows acceleration, the area under the graph shows distance.

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7
Q

What is the acceleration of free fall?

A

9.8m/s2

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8
Q

How do objects fall without air resistance?

A

Free fall can only happen when the only acting force is weight.

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9
Q

What is air resistance?

A
  1. It is a form of friction.
  2. It opposes the motion of Moving Objects
  3. It increases with the surface area/size of the moving objects
  4. It increases with air density
  5. It increases with speed of motion
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10
Q

What is terminal velocity?

A

When the air resistance is equal to the weight of the object. When there is uniform velocity.

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