# Physics revsion P2a Year 11 Mock

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On a distance-time graph, what does steady speed look like?
straight uphill or downhill sections
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On a distance-time graph, what does accelerating look like?
curve going upwards (increasing gradient) is acceleration, levelling off is deceleration
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On a distance-time graph, what does stationary look like?
a line parallel to the x axis
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On a distance-time graph, what does the gradient tell you?
the speed: S=D/T
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What does acceleration mean? how can you work it out? unit?
acc^= change in velocity/time taken for change in m/s/s OR f=ma, a=f/m
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On a velocity-time graph, what does a steady speed look like?
a line parallel to the x axis
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On a velocity-time graph, what does acceleration look like?
a straight line upwards or downwards, or a curved line means increasing or decreasing acceleration
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On a velocity-time graph, what does stationary look like?
anywhere touching the x axis (y=0)
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On a velocity-time graph, what does the gradient represent?
The acceleration.
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w=mg means what?
weight = mass x gravity
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what is a resultant force?
The overall force acting on a mass
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a resultant force means that what will happen?
a change in velocity; acceleration or deceleration
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what are reaction forces?
They are equal and opposite to each other
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what is friction? what forms of it are there?
you get friction between any two points of contact between objects. Friction always opposes movement. -drag/air resistance
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What does the term 'terminal velocity' mean?
that an object has reached its maximum speed and will now fall at a steady speed
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What is work done?
work done= force x distance. when a force moves an object through a distance, work is done.
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What is the formula for Gravitaional Potential energy?
Ep= m x g x h
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What is the formula for Kinetic energy?
Ke= 1⁄2 × mass × velocity2
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what is velocity using the formula for Ke?
v= squareroot of: 2Ek/mass
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## Other cards in this set

### Card 2

#### Front

On a distance-time graph, what does accelerating look like?

#### Back

curve going upwards (increasing gradient) is acceleration, levelling off is deceleration

### Card 3

#### Front

On a distance-time graph, what does stationary look like?

### Card 4

#### Front

On a distance-time graph, what does the gradient tell you?

### Card 5

#### Front

What does acceleration mean? how can you work it out? unit?