Q. 41

Expert-verifiedFound in: Page 229

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

A kg human sprinter can accelerate from rest to m/s in s. During the same time interval, a kg greyhound can go from rest to m/s. What is the average power output of each? Average power over a time interval is

Average power output of sprinter is and of greyhound is .

Concept:The **K.E.** of an object moving with velocity is Here **is that the** mass of **the thing**.The average output **is** calculated by dividing **the ultimate** **mechanical energy** by **the quantity** **of your time** it took **to induce** that energy:Here **is that the** time.Substitute the expression for **K.E.** **within the** above equation.

In the case of the sprinter, **the typical** power output is:Substitute for mass, for speed and for time.

The greyhound's average power output is:

Substitute for mass, for speed, and for time.

So, the greyhound94% of StudySmarter users get better grades.

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