A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of, Ask an Expert

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Q. A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 16 m/s. How much work must be done by the brakes to bring the bike and rider to a stop?

How far does the bicycle travel if it takes 3.5 s to come to rest?

Q. A hockey puck moving along the +x axis at 0.44 m/s collides into another puck that is at rest. The pucks have equal mass. The first puck is deflected 37 below the +x axis and moves off at 0.35 m/s. Find the speed and direction of the second puck after the collision.

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Category:- Physics
Reference No.:- M9277159

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