Forces & Newton's Laws Review

Front

What is the reason that all planets orbit the sun rather than Earth?

Back

The sun has more mass, which creates a stronger gravitational pull.

Front

How do you calculate the acceleration of an object when a net force is applied?

Back

Acceleration can be calculated using the formula: acceleration = net force / mass.

Front

What principle explains the action-reaction forces experienced during rocket propulsion?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What is the definition of 'weight' in physics?

Back

Weight is the measure of the force of gravity acting on an object.

Front

How do you determine the net force when two forces are acting in the same direction?

Back

To find the net force, you add the magnitudes of the two forces together.

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 weight?

Back

Weight = mass × acceleration due to gravity (W = mg).

Front

What is the significance of mass in relation to gravitational force?

Back

Mass is a measure of the amount of matter in an object and directly affects the strength of the gravitational force it experiences.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is the difference between mass and weight?

Back

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