AQA GCSE Physics 4.5 Forces overview quiz quiz

Total mass

Average speed

Kinetic energy

Velocity

Gravity

Friction

Tension

Air resistance

$1.02\,N$

$98\,N$

$9.8\,N$

$980\,N$

The weight of an object resting on a level horizontal surface

The power of a machine

The energy transferred when a force moves an object

The momentum of an object

Force is directly proportional to the total mass of the object being stretched

Acceleration is proportional to force

Pressure is proportional to volume

Extension is directly proportional to force up to the limit of proportionality

$25\,m/s$

$8\,m/s$

$16\,m/s$

$1600\,m/s$

The instantaneous speed

The distance travelled

The acceleration

The force

An object always stays perfectly still unless an outside force acts on it

Forces always act in pairs

Resultant force equals mass times acceleration, $F = ma$

Momentum is always conserved

$16\,m/s^2$

$32\,m/s^2$

$192\,m/s^2$

$3\,m/s^2$

Tiredness

Wet roads

Worn tyres

Worn brakes

$200\,kg\,m/s$

$20000\,kg\,m/s$

$2010\,kg\,m/s$

$100000\,kg\,m/s$

By increasing the total change in momentum experienced during the crash

By reducing the mass of the car

By increasing the time over which the momentum changes

By increasing the speed of the collision