Honors Physics Semester 1 Exam Review

Front

What is the SI base unit for time?

Back

1 second.

Front

What does a free-body diagram of a ball falling in the presence of air resistance show?

Back

A downward arrow to represent the force due to gravity and an upward arrow to represent the force of air resistance.

Front

Why do physicists use models?

Back

To explain the basic features of complex phenomena.

Front

What type of quantity is the speed of a snake slithering through grass?

Back

Scalar.

Front

If a feather and a metal bolt are dropped from the same height in a vacuum, which hits the ground first?

Back

They would hit the ground at the same time.

Front

What is a vector quantity?

Back

A quantity that has both magnitude and direction.

Front

What is a scalar quantity?

Back

A quantity that has only magnitude and no direction.

Front

What is the principle of superposition in physics?

Back

The net effect of multiple forces acting on an object is the vector sum of the individual forces.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.