Describe the different forces upon a falling object with reference to Newton's first law.
A falling object will reach terminal velocity when the force draging it down (ie its weight due to gravity) is equal to the air resistance opposing the motion upwards. When the two forces are equal the object will experience a constant velocity downwards and thus no acceleration. This is in accordance with Newton's second law that states that an object will remain in its current state of motion unless acted upon by another force.
AL
Related Physics GCSE answers
All answers ▸What happens to the pressure inside a sealed canister of gaseous oxygen when it is transferred from a cool environment to a warmer environment?
Describe the energy changes as electricity is produced in a fossil fuel station.
A tractor pulls a plough 2km across a field using a constant force of 8N, what is the work done by the tractor?
1. At the end of a marathon sweat covered runners are given a shiny foil sheet to stop them cooling down too quickly. a) Suggest why the runner may cool down too quickly without the foil sheet (1) b.) Explain how the foil sheet reduces heat loss(2)