The force of gravity on the surface of a planet will affect a person's or object's
a. mass.
b. terminal velocity.
c. weight.
d. free fall.

The correct answer is weight.

The weight is the measure of the how much the gravity pulls a body or mass on the planet. There lies a difference in the weight of the body on the moon and the weight of the body on earth. This is because there is a difference in the value of gravity on earth and moon.This is the reason, the mass of the body remains same everywhere but the weight of the body changes because the gravity acts on it.

Gravity adds weight to the body.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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