Chapter 3 - Speed Flashcards

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1
Q

What is the equation for Speed?

A

Speed (v) = distance (d)/time (t)

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2
Q

What is Instantaneous Speed?

A

Instantaneous speed is the speed at any instant. (Ex. The speedometer on a car shows instantaneous speed).

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3
Q

Is motion relative?

A

Yes! Unless stated otherwise, we always mean relative to the surface of the Earth.

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4
Q

What is the equation for Average Speed?

A

Average speed (u) = total distance covered (d)/time interval (t)

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5
Q

What is Velocity?

A

Velocity is speed & direction.

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6
Q

What is Constant Velocity?

A

Constant speed & constant direction.

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7
Q

What is Changing Velocity?

A

When either the speed or direction changes.

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8
Q

What is Acceleration?

A

Acceleration is how quickly and in what direction velocity changes.

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9
Q

What is the equation for Acceleration?

A

Acceleration (a) = change in velocity/time interval (t).

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10
Q

What is Deceleration?

A

Deceleration is when speed slows.

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11
Q

What is Free Fall?

A

Free fall is when a falling object is free of ALL restraints. It falls only under the influence of gravity.

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12
Q

What is the equation for Instantaneous Velocity?

A

velocity (v) = gravity (g) x time interval (t)

g = 10 m/s^2

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13
Q

What is the equation for Distance Traveled?

A

Distance traveled (d) = 1/2 x gravity (g) x time interval (t)

g = 10 m/s^2

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