Question 21 • FL-2003310-Physical Science
Rearrange PE = mgh to find height: h = PE ÷ (mg). Using the values given, h = 1,568 J ÷ (40 kg × 9.8 m/s²) = 1,568 ÷ 392 = 4.0 m, so the hillside is 4.0 m high.
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