24-25 Conceptual Physics Unit 3: Forces Test Prep

Front

What force holds the planets in motion around the sun?

Back

Gravitational force is the force that holds the planets in motion around the sun.

Front

What category of force requires objects to be touching each other?

Back

Contact Forces are the category of forces that require objects to be touching each other.

Front

A car has a mass of 1500 kg and accelerates at 2 m/s² to the right. How much is the net force?

Back

The net force is 3000 N to the right, calculated using F = m * a (1500 kg * 2 m/s²).

Front

Forces acting in the same direction should be added together. True or False?

Back

True. Forces acting in the same direction are combined by addition.

Front

What are the units of Acceleration?

Back

The units of Acceleration are m/s².

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = m * a, where F is force, m is mass, and a is acceleration.

Front

What is the difference between contact forces and action-at-a-distance forces?

Back

Contact forces require physical contact between objects, while action-at-a-distance forces act over a distance without direct contact.

Front

What is inertia?

Back

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

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass, calculated as W = m * g, where g is the acceleration due to gravity.

Front

What is Newton's First Law of Motion?

Back

Newton's First Law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.