Question: A (70 mathrm{~kg}) human sprinter can accelerate from rest to (10 mathrm{~m} / mathrm{s}) in (3.0 mathrm{~s}). During the same time interval, a (30 mathrm{~kg})

A $70 \mathrm{~kg}$ human sprinter can accelerate from rest to $10 \mathrm{~m} / \mathrm{s}$ in $3.0 \mathrm{~s}$. During the same time interval, a $30 \mathrm{~kg}$ greyhound can accelerate from rest to $20 \mathrm{~m} / \mathrm{s}$. Compute

(a) the change in kinetic energy and

(b) the average power output for each.

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