# Higher Faster Stronger

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What is a scalar? Give examples.
A quantity with only magnitude. E.g. distance, temperature.
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What is a vector? Give examples.
A quantity with both magnitude and direction. E.g. acceleration, velocity.
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What is the gradient of a displacement-time graph?
Velocity.
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What is the gradient of a velocity-time graph?
Acceleration.
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What is the area of a velocity-time graph?
Displacement.
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What is the equation for speed?
Distance/time
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What is the equation for acceleration?
Velocity/time
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Recall experiment to measure gravity.
Ball bearing and trap door, different displacements, measure time, plot graph, gradient =2/g
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List the equations of motion.
v=u+at, s=vt-1/2at^2, s=ut+1/2at^2, s=1/2(u+v)t, v^2=u^2+2as
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Newton's first law?
If there is no resultant force acting on a body it will remain at rest or move at a constant speed.
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Newton's second law?
Acceleration is directly proportional to force and inversely proportional to mass. F=ma
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Newton's third law?
Equal and opposite reaction force, same type, magnitude and line. different direction and bodies.
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Define projectile motion
The horizontal and vertical motion are independent.
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work done =
force x distance
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power =
work done or energy transferred/time
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kinetic energy =
1/2mv^2
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GPE =
mgh
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when are kinetic energy and GPE equal?
When there are no external forces applied
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Energy can never be...
created or destroyed, it can only be transferred.
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Recall experiment to find acceleration
2 light gates, measure two times for a piece of card/trolley, initial and final velocity, use equation for acceleration.
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Recall experiment for F=ma.
trolley on friction compensated slope, 2 light gates, increase no. elastic bands or mass of trolley, graph.
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Define tension
A pulling force found in a string or cable.
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Define weight
mass x gravity
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Define friction
A force that resists the relative motion of things sliding against each other.
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Define air resistance
A.K.A drag, force acting against an object
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Define upthrust
An upward force acting on a body that is partly or fully immersed in a fluid.
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Define viscous drag
A resistive force acting on a material passing through a fluid.
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Define lift
A mechanical force generated by a solid object moving through a fluid
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Define normal reaction force
Perpendicular to the contact force.
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## Other cards in this set

### Card 2

#### Front

What is a vector? Give examples.

#### Back

A quantity with both magnitude and direction. E.g. acceleration, velocity.

### Card 3

#### Front

What is the gradient of a displacement-time graph?

### Card 4

#### Front

What is the gradient of a velocity-time graph?

### Card 5

#### Front

What is the area of a velocity-time graph?