(b) The graph shows the vertical velocity of the skydiver during the first 40 s of the fall. His parachute is not open during this time.
Vertical
velocity
0
0
10
30
40
20
Time in s
Explain the shape of the graph.
(4)

What is the relationship between the wavelength of a wave and it's energy?

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

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