The formula to calculate kinetic energy is KE = 0.5 * mass * velocity^2.
Plugging in the values:
mass = 520 kg
velocity = 18.8 m/s
KE = 0.5 * 520 * (18.8)^2
KE = 0.5 * 520 * 353.44
KE = 90,480.6 J
Therefore, the kinetic energy of the horse and jockey is 90,480.6 J. So the correct answer is:
90,480.6 J
A racehorse is running at 42 miles per hour, equivalent to 18.8 meters
per second. The horse and its jockey have a combined mass of 520
kilograms. How much kinetic energy do they have?
(1 point)
90,480.6 J
458,640 J
451,584.0 J
91,894.4 J
1 answer
1 answer