Newton's Laws / Free Body Diagrams

What is force?

• A push or pull on an object as a result of its interaction with another object

• Everything that surrounds a system

• A force exerted when an object is in contact with another object

• A force that can be exerted over a distance and does not require contact in order to be exerted

Tags

NGSS.MS-PS2-5

What is Newton's First Law?

• The restoring force of a spring is proportional to the displacement of the spring

• An object in motion will stay in motion unless acted on by an external force

• F = ma
  

• For every force, there's a force equal in magnitude but opposite in direction.

What is Newton's Second Law

• F = -kx

• F = ma

• F = mg

• F = mad

Which of Newton's Laws does the picture best represent?

• Newton's 2nd Law 

• Newton's 3rd Law

• Newton's 1st Law

• Newton's 4th Law

Tags

NGSS.MS-PS2-2

What is the force of gravity on a person whose mass is 75 kg?

• 736 N

• 84.8 N

• 750 N

• 368 N

Tags

NGSS.MS-PS2-4

A block has a mass of 1 kg. What would the normal force acting on the block be?

• -10N

• 10N

• 1N

• -1N

Tags

NGSS.HS-PS2-1

Block of cheese, B, has a mass of 0.5 kg and the wheel of cheese, W, has a mass of 0.4 kg. What is the tension in rope 1? Assume the acceleration is 0 m/s²

• 5 N

• 9 N

• 4 N

• .9 N

Tags

NGSS.MS-PS2-2

Based on the free-body diagram, which statement is true?

• The object is moving to the left

• The object is accelerating to the right

• The object is accelerating to the left

• The object is moving to the right

Tags

NGSS.MS-PS2-2

A block slides to the right with a constant speed. Which of the following free-body diagrams could possibly be correct for this object?

• I and II only

• I only

• II only

• III only

Tags

NGSS.HS-PS2-1

What is the NET FORCE of this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

Tags

NGSS.MS-PS2-5