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 512 kilograms. How much kinetic energy do they have?

KE=12mv2
(1 point)
Responses

451,584.0 J
451,584.0 J

180.961.3 J
180.961.3 J

90,480.6 J
90,480.6 J

4,812.8 J
4,812.8 J

The correct answer is:

451,584.0 J