Question: If power (measured in W, or watts) is defined as work (measured in J, or joules) performed per unit time (measured in s), and work
If power (measured in W, or watts) is defined as work (measured in J, or joules) performed per unit time (measured in s), and work is defined as force (measured in N or newtons) × distance (measured in m) and speed is defined as distance per unit time (measured in m/s), what is the power being exerted by a force of 1000. N on a car traveling at 30. m/s? (Assume force and speed are in the same direction, and treat all numbers as positive.) (A: 3.0 × 104 W)
Assume that on the surface of the Earth, g = 9.81 m/s2 = 32.2 ft/s2 (i.e., each to three significant figures). Make sure you are reporting the solution to the proper number of significant figures.
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