Final Exam Study Guide

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Formula: F = ma.

Front

What unit is used to measure force?

Back

Newtons (N)

Front

What does a positive slope on a velocity vs. time graph indicate?

Back

The object is speeding up with positive acceleration.

Front

What is the cosmic microwave background (CMB)?

Back

Leftover radiation from the Big Bang.

Front

Why does a person weigh less on the Moon than on Earth?

Back

The Moon has less mass and therefore less gravity.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravity (W = mg).

Front

What is gravitational force?

Back

The attractive force between two masses.

Front

What is the difference between mass and weight?

Back

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

Front

What is acceleration?

Back

The rate of change of velocity of an object.