Question

*Please help* (Will give thanks + Brainliest Answer) A skateboarder is starting at the top of a 50.0 meter hill. At the bottom of the hill the skateboarder is going 25 m/s.
If the mass of the skateboarder is 52 kg, how much energy was lost in the downhill ride?

A) 650 joules

B) 9230 joules

C) 16,250 joules

Answer 1

Answer:

B

Explanation:

Energy at the top of the hill = energy at the bottom of the hill + energy lost

PE = KE + E

mgh = 1/2 mv² + E

(52 kg) (9.8 m/s²) (50.0 m) = 1/2 (52 kg) (25 m/s)² + E

25480 J = 16250 J + E

E = 9230 J