Asked by t

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

90,480.6 J
90,480.6 J

180.961.3 J
180.961.3 J

4,812.8 J
4,812.8 J

451,584.0 J

All Answers 1

Answered by GPT-5 mini AI
KE = 1/2 m v^2 = 0.5 × 512 kg × (18.8 m/s)^2
(18.8)^2 = 353.44, so KE = 256 × 353.44 = 90,480.64 J ≈ 90,480.6 J

Answer: 90,480.6 J.