Question

A 1,198 N sky diver has opened his parachute to slow his descent to a constant speed the parachute applies 1,277 N of force. He experiences a 7.5 m/s2 deceleration. What is the mass of the sky diver?

Answer 1

The mass of the skydiver is 10.53 kg.

Step-by-step explanation:

Force of the sky diver acting downwards due to gravity = 1198 N

Force of the parachute acting upwards against gravity = 1,277 N

Net Up word Force = F Upwards - F downwards

=1,277 N - 1198 N = 79 N

Deceleration on the parachute = 7.5m/s2

⇒ Acceleration = - 7.5 m / s2

Now, FORCE = MASS x ACCELERATION

or, 79 N = M x (7.5 m /s2)

⇒ M = 79/7.5 = 10 . 53 kg

or, mass = 10.53 kg

Hence, the mass of the skydiver is 10.53 kg.