The weight of a skydiver is 750 N.
The weight of the skydiver acts downwards, as shown in the diagram.
While the skydiver is falling, another force acts upwards.
The upward force varies as the skydiver falls
drag/air resistance
weight = 750 N
(not to scale)
The skydiver is accelerating between time = 0 and time = 20 s of the fall.
Between time = 20 s and time = 40 s the skydiver is falling at a constant speed.
(a) On the diagram, write the name of the upward force on the dotted line above the upward force.
(b) Suggest a value for the upward force on the skydiver at time = 10 s.
N [1]
(c) Determine the value of the upward force on the skydiver at time = 30 s.
N [1]
[Total: 3]