Balanced & Unbalanced Forces

What is a force?

• A type of energy

• A push or a pull

• A measure of mass

• A unit of distance

Tags

NGSS.MS-PS2-1

What is the unit of force in the International System of Units (SI)?

• Joule

• Watt

• Newton

• Pascal

According to Newton's First Law, what happens to an object at rest if no unbalanced force acts on it?

• It starts moving

• It stays at rest

• It accelerates

• It changes direction

What is a balanced force?

• Two forces acting in the same direction

• Two forces acting in opposite directions and equal in size

• A single force acting on an object

• A force that causes acceleration

What is an unbalanced force?

• A force that does not cause any change in motion

• Two or more forces that are equal and opposite

• Two or more forces that are not equal and opposite, causing acceleration

• A force that acts only on stationary objects

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NGSS.MS-PS2-2

What happens to an object when balanced forces act on it?

• It accelerates

• It changes direction

• It remains in its current state of motion

• It increases in mass

Which law of motion explains why you fly through the windshield if you are not wearing a seatbelt during a collision?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Universal Gravitation

What is the effect of an unbalanced force on an object?

• It remains stationary

• It moves at a constant speed

• It accelerates

• It decreases in mass

Tags

NGSS.MS-PS2-2

Which of the following is NOT a result of balanced forces?

• A car moving at a constant speed

• A book lying on a table

• A ball at rest

• A car accelerating

If an object is moving at a constant velocity, what can be said about the forces acting on it?

• They are balanced

• They are unbalanced

• There are no forces acting on it

• The forces are increasing

Tags

NGSS.MS-PS2-2