Question

a good way to measure your power is
a to walk on a balance beam
b to jog a mile to loosen up
c to stretch joints and muscles regularly
d to run 10 flights of stairs in several minutes
please select the best answer from the choices provided

Explanation:

Power in a physical context relates to the rate of doing work. Running 10 flights of stairs in several minutes involves doing work (against gravity) over a period of time, which can be used to calculate power. Walking on a balance beam (A) is more about balance. Jogging a mile to loosen up (B) is about warming - up. Stretching joints and muscles regularly (C) is about flexibility.

Answer:

D. to run 10 flights of stairs in several minutes