Mark weighs 200 Newtons on Earth, where the force of gravity is 10 m/s^2. He goes to Mars, where the force of gravity is
3.5 m/s^2. What is Mark's weight on Mars?
a 200 N
b 70 N
c 700 N
d 570 N
Mark's weight on Mars can be calculated by multiplying his weight on Earth (200 N) by the ratio of the force of gravity on Mars to the force of gravity on Earth.
weight on Mars = weight on Earth * (force of gravity on Mars / force of gravity on Earth)
weight on Mars = 200 N * (3.5 m/s^2 / 10 m/s^2)
weight on Mars = 70 N
Therefore, the correct answer is b) 70 N.