a
(1/2)(66)(11)^2
b
(1/2)(35)(20)^2
c
power = work/time = Ke/time = answer a/3.4
d
answer b / 3.4
A 66 kg human sprinter can accelerate from rest to 11 m/s in 3.4s. During the same interval, a 35 kg greyhound can accelerate from rest to 20 m/s. Compute
(a) the change in kinetic energy of the sprinter.
(b) the change in kinetic energy of the greyhound.
(c) the average power output of the sprinter.
(d) the average power output of the greyhound.
1 answer
2 answers