Speed - Velocity Flashcards

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1
Q

What is the key equation for velocity?

A

Velocity = Displacement/time

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2
Q

What is the symbol equation for velocity?

A

V = s/t

V = Velocity in meters per second (m/s)
S = Displacement, measured in m
T = Time, measured in seconds (s)

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3
Q

What is velocity?

A

Velocity is a vector quantity, so it uses displacement, s, rather than the distance which is scalar.

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4
Q

What does acceleration mean?

A

Acceleration is defined as the rate of change in velocity.

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5
Q

What is the key equation for acceleration?

A

Acceleration = change in velocity/change in time

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6
Q

How is change in velocity found?

A

The change in velocity is found by the difference between the initial and final velocity.

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7
Q

What is the symbol equation for acceleration?

A

A = v/t

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8
Q

What does acceleration and deacceleration on a graph represent?

A

Acceleration - Speed up (Positive)
Deacceleration - Slow down (Negative)

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9
Q

What does a, v, t represent?

A

a = acceleration in meter per second square (m/s2)

V = Change in velocity in meters per second (m/s)

T = Time is taken in seconds (s)

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10
Q

Why is acceleration in m/s square?

A

m/s / s
m/s x 1/s = m/s2

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11
Q

What is the formula for change in velocity?

A

Change in velocity = Final velocity - initial velocity

V = v - u

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12
Q

What do, v and u represent in the previous formula?

A

v = final velocity in meters per second (m/s)

U = Initial velocity in meters per second (m/s)

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13
Q

What happens when an object speeds up and slows down?

A

Speeds up = Positive acceleration
Slows down = Negative deacceleration

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