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Physics > Motion > Flashcards

Motion Flashcards

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1
Q

What are the 2 types of quantities in physics?

A

Vector and scalar

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2
Q

What are the 2 quantities in a scalar?

A

Magnitude and unit

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3
Q

What are the 3 quantities in a vector

A

Magnitude unit and direction

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4
Q

What are the units for distance and speed?

A

M and m/s

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5
Q

What are the units for displacement and velocity?

A

M and m/s

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6
Q

What is the unit for acceleration?

A

M/s Squared

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7
Q

What is the equation for speed?

A

S = d / t

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8
Q

What is the equation for average speed if you have the initial and final speeds?

A

S = (u + v) / 2

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9
Q

What is the equation for rate of change of speed?

A

Δ S = (v - u) / t

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10
Q

What is the equation for velocity?

A

V = Displacement / t

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11
Q

What is the equation for velocity if you have the initial and final velocity?

A

V = (u + v) / 2

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12
Q

What is the equation for acceleration?

A

A = Δ V / t. Δ V = (final - initial)

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13
Q

What does the gradient represent on a distance time graph?

A

Speed

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14
Q

What does the gradient of a speed time graph represent?

A

Δ S. rate of change of speed

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15
Q

What does the area under a speed time graph represent?

A

Distance travelled

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16
Q

What does the gradient of a displacement time graph represent?

A

Velocity

17
Q

What does the gradient of a velocity time graph represent?

A

Acceleration

18
Q

What does the area under a velocity time graph represent?

A

Displacement

19
Q

When an objects velocity is increasing then the object is said to be:

A

Accelerating

20
Q

When an objects velocity is decreasing, then the object is said to be:

A

Decelerating. Also called Retardation

21
Q

If a distance time graphs gradient is zero what is happening to the object?

A

Speed = 0. At rest

22
Q

If a speed time graphs gradient is zero what is happening to the object?

A

Δ S = 0. Moving with a constant speed

23
Q

If a displacement time graphs gradient is zero what is happening to the object?

A

Velocity = 0. At rest

24
Q

If a velocity time graphs gradient is zero what is happening to the object?

A

Acceleration = 0. Moving with a constant ( positive ) velocity

25
Q

How would you get a negative acceleration?

A

When your final speed is less than your initial speed this is due to the equation being ( V - U )

Physics (6 decks)

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