Q12 - The gravitational attraction on the

Last updated at September 16, 2026 by

  • ๐Ÿ“‹ Revise, Reflect, Refine, Q12 (Page 138)
    The gravitational attraction on the surface of the Moon is about 1/6th of that on the surface of the Earth. An astronaut can throw a ball up to a height of 8 m from the surface of the Earth. How far up will the ball thrown with the same upward velocity travel from the surface of the Moon?
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    Answer
    • Same throw = same initial kinetic energy = ½mv²
    • All kinetic energy converts to potential energy at the top — ½mv² = mgh
    • So h = v² / 2g
    • On the Moon, g is 1/6th — so h becomes 6 times .
    • Height on the Moon = 6 × 8 m = 48 m
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