Calculate the minimum average power output necessary for a person to run up a 12.0 m long hillside, which is inclined at 25.0 above the horizontal, in 3.00 s. You can neglect the person's kinetic energy.
Express your answer in horsepower. (1 hp = 746 W)
A) 1.24 hp
B) 2.93 hp
C) 1.86 hp
D) 0.740 hp
Question 2
A 7.0-kg rock is subject to a variable force given by the equation F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2 If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m.
What will be an ideal response?
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