What is the equation for work done?

Force x distance

What is the equation for weight?

Mass x 9.81(gravitational field strength)

What is a scalar quantity?

Just Magnitude

What is a vector quantity?

Magnitude with direction

What is the equation to work out weight?

mass x gfs (9.81)

What is the equation for work done against gravity?

weight x distance

What is work done?

The amount of energy transferred measured in joules

What is power?

The rate of work done so how fast the energy is transferred

What is the equation to work out power?

work done/time

or

energy transferred/time

How do you find the resultant force when there is a direction?

1) Draw a triangle with the two forces labelled and choose an appropriate scale factor (e.g. 1cm = 5m)

2) measure the hypotenuse and times by the scale factor to find resultant force

2) Work out the hypotenuse using a2 + b2 = c 2 to check

What is the equation to work out pressure?

force/area

What is the equation to work out pressure in a fluid?

height x density x 9.81

What is atmospheric pressure? (actual number)

100,000 pascals

What is up thrust?

The difference between the pressure above and the pressure below

What is elastic deformation?

when a an object will return to its original shape after the forces stretching it have been removed

What is inelastic deformation?

When an object will not return to its original shape after the forces stretching it have been removed

What is the equation to work out energy transferred in stretching?

0.5 x spring constant x extension [squared]