A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 51.1 kg and air resistance exerts a total upward force of 657 N on her and her parachute. What is the magnitude of the acceleration of the parachutist?

Question

Physics

Keagan

16 January, 11:37

A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 51.1 kg and air resistance exerts a total upward force of 657 N on her and her parachute. What is the magnitude of the acceleration of the parachutist?

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Answers (1)

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Cohen · Answer 1

The resultant force will be equal to difference of her downward force, her weight, and the upward force, the air resistance.

Fnet = 657 - 51.1 x 9.81

= 149.7 N

F = ma

a = F / m

a = 149.7/51.1

a = 2.93 m/s²