skydiver Flashcards
1
Q
1.
as soon as she jumps out the plane
A
the only force acting is weight
this is due to gravity
(they will accelerate towards the ground because the resultant force acts downwards)
2
Q
weight will…
A
not change during the journey
3
Q
2.
as she falls…
A
friction with air molecules will be experienced (air resistance)
weight is still greater than air resistance, so she still accelerates downwards
4
Q
3.
as air resistance = weight…
A
no resultant force.
velocity = constant
TERMINAL VELOCITY REACHED
5
Q
4.
as parachute is opened…
A
air resistance increases (greater than weight)
resultant force acts upward
she decelerates
6
Q
- after parachute has been open a while…
A
constant velocity reached
