What is net force? a. the fundamental forces b. the unified force c. the gravitational force d. the vector sum of the forces

Net force is the vector sum of the forces.

Option D

Explanation:

The net force can be referred as the sum total of all the forces exerted up on a body. The word net refers to the total, hence net force refers to the total force which exerted upon the object.

A force is related as the displacement experienced by an object due to external factors or interaction acting up on the object. Option A,B and C are irrelevant as they are separate forces exerted up on the object.

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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