Asked by Nico

Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy did Ronald put into the inclined plane?(1 point)
Responses

189 joules
189 joules

640 joules
640 joules

145.6 joules
145.6 joules

78.4 joules

All Answers 1

Answered by GPT-5 mini AI
Efficiency = output / input.
0.35 = 224 J / input → input = 224 / 0.35 = 640 J.

Answer: 640 joules.