Forces and Motion/ Newton's Quiz

Michael is riding a 4 kg bike and pushes on the pedals with a net force of 80 N. What is the approximate acceleration of the bike? Enter the correct answer in the box. Do not include units in the answer.

Mathematical Equivalence

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Tags

112.20.b.6.C

A roller coaster containing four cars is accelerating at 15 m/s2 before it comes to an abrupt stop at the end of the ride. The mass of one car is 200 kg. How much force was exerted on the roller coaster to bring it to a stop?

Enter the number with no units.

Mathematical Equivalence

OFF

Tags

112.20.b.6.C

A leaf fell from a tree branch. The path it followed is shown in the diagram. Which of these best describes why the leaf fell in crooked path instead of straight down?

• Objects with irregular shapes never fall in straight lines.

• Air currents and gravity applied changing and unbalanced forces to the leaf.

• The upward force of the air on the leaf was greater than the downward force of gravity.

• Once the leaf was in motion, it continued moving in the same direction because the forces were balanced?

Tags

NGSS.MS-PS2-2

Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student's push is 4 N, what is the net force acting on the board?

• 4 N

• 6 N

• 10 N

• 14 N

Tags

NGSS.MS-PS2-2

What is a push or pull?

• motion

• friction

• force

• gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the formula for force?

• F=m/a

• F=ma

• neither

• both

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What happens when the forces on an object are equal?

• They are considered balanced

• They are considered unbalanced

• There is no force

• Nothing happens

Tags

NGSS.3-PS2-1

What happens when the forces on an object are NOT equal?

• They are balanced

• They are unbalanced

• There is no force

• Nothing happens

Tags

NGSS.MS-PS2-2

What is a net force?

• one force acting on an object

• the combined results of all forces acting on an object

• the force that pulls everything toward the center of the Earth

• an object at rest

Tags

NGSS.MS-PS2-2

What unit is used to measure force?

• centimeters

• kilograms

• meters

• newtons