A person in a kayak starts paddling, and it accelerates from 0 to 0.61 m/s in a distance of 0.39 m. If the combined mass of the person and the kayak is 74 kg, what is the magnitude of the net force acting on the kayak?

Question

Physics

Hector Moss

2 February, 23:17

A person in a kayak starts paddling, and it accelerates from 0 to 0.61 m/s in a distance of 0.39 m. If the combined mass of the person and the kayak is 74 kg, what is the magnitude of the net force acting on the kayak?

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Answers (1)

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Britney Morrison · Answer 1

35.3 N

Explanation:

U = 0, V = 0.61 m/s, s = 0.39 m

Let a be the acceleration.

Use third equation of motion

V^2 = u^2 + 2 as

0.61 * 0.61 = 0 + 2 * a * 0.39

a = 0.477 m/s^2

Force = mass * acceleration

F = 74 * 0.477 = 35.3 N