APS - Final Exam Practice

Front

During a phase change, what changes in the molecules?

Back

The potential energy (PE) of the molecules changes.

Front

What is the formula to calculate acceleration when a net force is applied?

Back

Acceleration (a) = Net Force (F) / Mass (m).

Front

If a net force of 8 N is exerted on a 2-kg object, what is its acceleration?

Back

4 m/s².

Front

True or False: A car driving in a circle at a constant speed is accelerating.

Back

True.

Front

What is the main component of the sun?

Back

Hydrogen.

Front

What is potential energy (PE)?

Back

The energy stored in an object due to its position or arrangement.

Front

What is kinetic energy (KE)?

Back

The energy an object possesses due to its motion.

Front

Define acceleration.

Back

Acceleration is the rate of change of velocity of an object.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, F = m * a.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change.