Unit 2 MC Review

Front

What happens to an object in motion when no external forces act on it?

Back

According to Newton's First Law of Motion, an object in motion will continue to move at a constant velocity unless acted upon by an external force.

Front

What does a force diagram represent?

Back

A force diagram visually represents all the forces acting on an object, showing their direction and magnitude.

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

How can you determine if an object is accelerating from a force diagram?

Back

An object is accelerating if the net force acting on it is not zero, which can be indicated by an unbalanced force in the force diagram.

Front

What does it mean for an object to move at a constant velocity?

Back

An object moving at a constant velocity has a constant speed and direction, meaning the net force acting on it is zero.

Front

What is the significance of friction in motion?

Back

Friction is a force that opposes motion, acting to slow down or stop moving objects.

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, resulting in no acceleration.

Front

How can you tell if an object is slowing down from a force diagram?

Back

An object is slowing down if the direction of the net force is opposite to the direction of its motion.

Front

What is the relationship between mass and acceleration in Newton's Second Law?

Back

In Newton's Second Law, as mass increases, acceleration decreases for a given force, meaning heavier objects accelerate less than lighter ones when the same force is applied.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion; it is directly related to the object's mass.