1 answer
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Step 1: Mark's weight on Earth = mass x gravity on Earth
200N = mass x 10 m/s^2
mass = 20 kg
Step 2: Mark's weight on Mars = mass x gravity on Mars
Mark's weight on Mars = 20 kg x 3.5 m/s^2
Mark's weight on Mars = 70 N
Therefore, Mark's weight on Mars is 70 N.
Correct answer: a) 70 N