PS NGSS Review 2025

Front

What is gravitational potential energy (GPE)?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as GPE = mass × gravity × height.

Front

How do you calculate gravitational potential energy?

Back

GPE = m × g × h, where m is mass (kg), g is acceleration due to gravity (9.8 m/s²), and h is height (m).

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = m × a).

Front

What is an example of balanced forces?

Back

A car parked at the mall is an example of balanced forces, where the forces acting on it are equal and opposite, resulting in no movement.

Front

What is net force?

Back

Net force is the total force acting on an object, calculated by combining all individual forces acting on it, taking direction into account.

Front

What is the difference between mass and weight?

Back

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

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is an example of unbalanced forces?

Back

A car speeding up is an example of unbalanced forces, where the force applied is greater than the opposing forces.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion, related to its mass.

Front

What is the law of universal gravitation?

Back

The law of universal gravitation states that every mass attracts every other mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.