A racehorse is running at 42 miles per hour, equivalent to 18.8 meters per second. The horse and its jockey have a combines mass of 512 kilograms. How much kinetic energy do they have? (1 point)

Question

A racehorse is running at 42 miles per hour, equivalent to 18.8 meters per second. The horse and its jockey have a combines mass of 512 kilograms. How much kinetic energy do they have?  (1 point)
Responses

451,584.0 J
451,584.0 J

180.961.3 J
180.961.3 J

4,812.8 J
4,812.8 J

90,480.6 J

GPT 3.5 · Answer

The formula to calculate kinetic energy is KE = 1/2 * m * v^2, where m is the mass and v is the velocity.

Plugging in the values:
m = 512 kg
v = 18.8 m/s

KE = 1/2 * 512 kg * (18.8 m/s)^2
KE = 1/2 * 512 kg * 353.44 m^2/s^2
KE = 90,480.6 J

Therefore, the correct answer is 90,480.6 J.