Unit 2 MC Review

Front

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

Back

An object in motion will continue to move at a constant velocity if no external forces act on it.

Front

What does a force diagram represent?

Back

A force diagram visually represents all the forces acting on an object, helping to analyze its motion.

Front

What does it mean for an object to accelerate to the left?

Back

It means that the net force acting on the object is directed to the left, causing it to increase its velocity in that direction.

Front

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

Back

If the force acting in the direction of motion is less than the opposing force, the object is slowing down.

Front

What does it mean for an object to be 'weightless'?

Back

'Weightless' means that the gravitational force (Fg) acting on the object is effectively zero, often experienced in free fall.

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 at a constant velocity unless acted upon by a net external force.

Front

What is the relationship between force and acceleration?

Back

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

Front

What is the significance of the direction of forces in motion?

Back

The direction of forces determines the direction of acceleration and thus the change in velocity of the object.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass (Weight = mass x gravity).

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.