Edexcel GCSE Physics Topic 8 Energy - Forces doing work overview quiz quiz

$E = F \times d$

$E = \frac{F}{d}$

$E = F + d$

$E = \frac{d}{F}$

$3.1\,\text{J}$

$200\,\text{J}$

$33\,\text{J}$

$2000\,\text{J}$

Half the work done

Twice the work done

The work done

The power

The total amount of energy transferred altogether

The size of the force that is applied

The distance the object is moved

The rate at which energy is transferred

One joule per second

One joule of energy transferred

One newton of applied force

One newton metre of work

$0.005\,\text{W}$

$200\,\text{W}$

$16200\,\text{W}$

$1809\,\text{W}$

The distance along the stairs

The width of each step

The vertical height climbed

The horizontal distance

The kinetic store

The thermal store

The gravitational store

Work done by a force

It stays the same

It steadily increases over time

It steadily decreases over time

It quickly becomes zero

$70\%$

$30\%$

$210\%$

$3.3\%$

Some of the energy is completely destroyed by the moving parts

It gains extra energy from the surroundings as it runs

Friction always wastes some energy as heat

The efficiency of a machine cannot be measured at all

Increasing the friction between the moving parts

Removing the energy supply from the machine

Adding more mass to the moving parts

Lubricating the moving parts