OCR Gateway GCSE Physics A topic P2 Forces overview quiz quiz

Velocity

Distance

Speed

Mass

The distance travelled

The acceleration

The speed

The force

An object stays still unless a force acts

Every action has an equal and opposite reaction

Resultant force equals mass times acceleration

Momentum is always conserved

They are really just two different names for exactly the same quantity

Mass is measured in newtons, while the weight is always measured in kilograms instead

Weight is always a smaller number than the mass of the very same object

Mass is the amount of matter in kilograms; weight is the force of gravity in newtons

Air resistance equals the weight, so the resultant force is zero

The weight is still much greater than the upward air resistance force

There is no air resistance acting on the skydiver at all by this point

The skydiver's weight has somehow fallen all the way down to zero

The force is inversely proportional to the extension

The force is directly proportional to the extension

The extension does not depend on the force

The spring constant changes with extension

The force divided by the perpendicular distance from the pivot

The force multiplied by the time it acts for

Force times the perpendicular distance from the pivot

The object's mass multiplied by its velocity

The total clockwise moment is always greater than the total anticlockwise moment

The moments only add up to zero in the case where there is no pivot at all

The single largest force acting always wins and tips the object over

The total clockwise moment equals the total anticlockwise moment about the pivot

Mass times velocity

Mass divided by velocity

Half times mass times velocity squared

Force times time

It reduces the total change in momentum of the occupants during the whole crash

It increases the time over which the momentum changes, so the force is smaller

It makes the whole car much heavier and harder to stop quickly

It completely removes any need for the occupants to wear a seatbelt