Gr.10 T3 (Physics) Flashcards

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1
Q

What is acceleration?

A

The rate of change in velocity.

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2
Q

Are the following vectors or scalars:

  1. Acceleration
  2. Velocity
  3. Speed
  4. Magnitude of something
A
  1. Vector
  2. Vector
  3. Scalar
  4. Scalar
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3
Q

What is the formula of acceleration (in words)?

A

acceleration equals change in velocity divided by change in time

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4
Q

What is instantaneous velocity?

A

A velocity at a specific time. The displacement divided by an infinitesimal time value.

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5
Q

What is instantaneous speed?

A

Magnitude of the instantaneous velocity

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6
Q

What does the gradient represent in a position-time graph?

A

Velocity

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7
Q

What does a curved line represent in a position-time graph?

A

Acceleration

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8
Q

What does the gradient represent in a velocity-time graph?

A

Acceleration

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9
Q

What does the area underneath the line represent in a velocity-time graph?

A

Displacement

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10
Q

What does a horizontal line mean in

1) a position-time graph
2) a velocity-time graph
3) a acceleration-time graph

A

1) object not moving
2) constant velocity, no acceleration
3) constant acceleration (positive or negative, depending on whether above or below the x-axis)

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11
Q

What does the area beneath a line represent in an acceleration-time graph?

A

Average velocity

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12
Q

What does stopping distance consist of?

A

Thinking distance+braking distance

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13
Q

Note that doesn’t work for a key card…

A
When a question asks 
1. The magnitude of...
2. How far...
3. How fast...
The answer does not need a direction.
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