The force of gravity acting on a child's mass on earth is 490 newtons. What's the child's mass? A. 206 kg B. 4,802 kg C. 50 kg D. 800 kg

asked Nov 3, 2017 131k views

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4 votes

The child's mass on earth is equal to 50kg.

Saulo Silva answered Nov 4, 2017

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3 votes

The answer is C. 50 kg because:

F = mxa
M = f/a
= 490N/9.81m/s^2
= 50kg