Mark weighs 200 Newtons on Earth, where the force of gravity is 10 m/s2. He goes to Mars, where the force of gravity is 3.5 m/s2. What is Mark's weight on Mars?

a. 200 N
b. 70 N
c. 700 N
d. 570 N

1 answer

On Mars, Mark's weight would be less than on Earth because the force of gravity on Mars is lower.

To find Mark's weight on Mars, we can use the formula:

Weight = Mass x Gravity

Since Mark's mass doesn't change when he goes to Mars, we can say:

Weight on Earth / Gravity on Earth = Weight on Mars / Gravity on Mars

Substituting the given values:

200 N / 10 m/s^2 = Weight on Mars / 3.5 m/s^2

Simplifying the equation:

20 = Weight on Mars / 3.5

To solve for Weight on Mars, we can cross multiply:

Weight on Mars = 20 x 3.5 = 70 N

Therefore, Mark's weight on Mars would be 70 N.

The answer is b. 70 N