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20-05-2022
SAT

contestada

A bicycle and its rider have a combined mass of 80. kilograms and a speed of 6.0 meters per second. what is the magnitude of the average force needed to bring the bicycle and its rider to a stop in 4.0 seconds?

Respuesta :

20-05-2022

Answer:

120 N

Explanation:

Use the equation F = m(Vf–Vi) / Δt.

average force = mass (final velocity - initial velocity) / change in time

F = 80. kg(6.0 m/s) / 4 s = 480 / 4 = 120 kgm / s^2 = 120 Newtons

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