Power is
a. the time rate of doing work.
b. the time rate of doing velocity.
c. the time rate of doing momentum.
d. the time rate of doing force.
a
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a. 1000 b. 480 c. ?720 d. 240 e. ?168
In a partially elastic collision between two objects with unequal mass:
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An asteroid revolves around the Sun with a perihelion 0.5 AU and an aphelion of 7.5 AU. What is its period of revolution?
A. 4 years B. 8 years C. 16 years D. 32 years E. 64 years
A child pulls on a wagon with a horizontal force of 75 N. If the wagon moves horizontally a total of 42 m in 3.0 min, what is the average power generated by the child?
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