Which of the following is an example of a force?

• Light

• Gravity

• Sound

• Heat

Tags

NGSS.5-PS2-1

What are unbalanced forces?

• Equal forces in opposite directions

• Unequal forces or forces in different directions

• Forces that do not act

• Forces that cancel each other

Tags

NGSS.MS-PS2-2

What does Newton's First Law of Motion explain about objects in motion?

• They stop immediately

• They stay in motion unless acted upon by an unbalanced force

• They change color

• They melt

Which of the following is a real-life example of unbalanced forces?

• A book resting on a table

• A car speeding up

• A stationary bicycle

• A parked car

Tags

NGSS.MS-PS2-2

What is an example of friction being useful?

• Machinery

• Walking

• Rusting

• Melting

What is the role of arrows in force diagrams?

• Show color

• Show direction and magnitude of forces

• Show temperature

• Show speed

What happens when unbalanced forces act on an object?

• The object remains stationary

• The object accelerates

• The object decelerates

• The object changes color

Tags

NGSS.MS-PS2-2

What type of friction occurs between moving objects and air?

• Static friction

• Sliding friction

• Air resistance

• Rolling friction

What is an example of unbalanced forces in transportation?

• A book on a table

• A tug-of-war with equal teams

• A car's engine force vs. friction

• A balanced seesaw

Tags

NGSS.MS-PS2-2

What is the relationship between 1 Newton and other units?

• 1 N = 1 kg × m/s^2

• 1 N = 1 kg × m/s

• 1 N = 1 g × m/s^2

• 1 N = 1 kg × m/s^3

Tags

NGSS.HS-PS2-1