The distance between two points joined by a straight line

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What is instantaneous speed?

The speed of an object at one particular point in time

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What is average speed?

Average speed is the total distance divided by the total time

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What is velocity?

Velocity is the rate of change of displacement

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What is acceleration?

Acceleration is the rate of change of velocity

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What does the gradient represent on a displacement-time graph?

Velocity

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What does the gradient represent on a velocity time graph?

Acceleration

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What does the area under a graph represent on a velocity-time graph?

Displacement

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What are the equations of motion for constant acceleration in a straight line, including motion of bodies falling in a uniform gravitational field without air resistance

SUVAT equations

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What is g

The acceleration due to gravity under freefall - 9.81ms^-2

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What is the formula for net force?

F=ma, force = mass x acceleration

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What is the unit of force?

The Newton, N, kgms^-2

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What is the formula for weight of an object?

W=mg, Weight = mass x acceleration due to gravity

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What is tension?

A force transmitted axially through a one dimensional object e.g. rope

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What is the normal contact force?

The force produced perpendicular to the surface when a force is applied in the direction of the surface

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What is friction?

The resistive force an object gets from moving along-side or through a material

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What is upthrust?

The buoyant force from being submerged in a liquid

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What is terminal velocity?

The highest velocity attainable by an object as it free-falls through a material

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What is a moment of force?

A rotational force created by applying a force at a distance along from a pivot

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What is a couple?

Two equal and anti-parallel force applied on opposite sides of a pivot

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What is the principle of moments?

For an object to be in equilibrium, the sum of the clockwise moments is equal to the sum of the anti-clockwise moments

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What is the centre of mass?

The centre of mass is where all the weight of an object is applied from, it is the objects centre of gravity

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What is the formula for calculating density?

ρ= m/v, density = mass / volume

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What is the unit for density?

kg/m^3

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What is the formula for calculating pressure?

P = F/A, pressure = force / area

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What is the unit for pressure?

The Pascal, N/m^2

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What is the formula for pressure in a fluid?

P = hρg, pressure = depth submerged x density of fluid x acceleration due to gravity

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Other cards in this set

Card 2

Front

What is instantaneous speed?

Back

The speed of an object at one particular point in time

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