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Which of the following is the main difference between mass and weight?

Weight is constant, while mass varies with location.

Mass is the force exerted by gravity, while weight is the amount of matter in an object.

Mass is constant, while weight varies with location.

Mass depends on the force of gravity, while weight does not.

Which of these forces is most important for the motion of an airplane through the air?

Tension.

Gravitational force.

Drag.

Friction.

In a free-body diagram, what does an arrow represent?

The mass of an object.

The direction and magnitude of a force.

The velocity of an object.

The force magnitude only.

What happens to the weight of an object if the value of g is halved?

It is doubled.

It remains the same.

It becomes zero.

It is halved.

What happens to drag force as the speed of an object increases?

It fluctuates randomly.

It increases.

It decreases.

It stays the same.