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?
Answer
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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