Question

Brennan is traveling in a car at a constant speed and in a constant direction. Once the brakes are applied, Brennan's upper body continues to move forward until a force in the opposite direction is applied on his body. Brennan's movement is an example of which scientific law?

A.
the law of inertia

B.
the law of gravity

C.
the law of magnetism

D.
the law of conservation of mass

Answer 1

Brennan's movement is an example of **A. the law of inertia**. This law, formulated by Sir Isaac Newton, states that an object in motion will remain in motion at a constant velocity unless acted upon by an external force. In this case, when the brakes are applied, Brennan's upper body continues to move forward due to inertia until a force (from the seatbelt or another object) acts on it in the opposite direction.