How much work is done on the point-particle system

Reference no: EM13504898

A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. (A good sprinter can run 100 meters in about 10 seconds, with an average speed of 10 m/s.)

What is the average horizontal component of the force that the ground exerts on the runner's shoes?

How much work is done on the point-particle system by this force? (Hint: use a fundamental principle, as applied to the point-particle system.)

Reference no: EM13504898

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