Forces and Motion (Pt 1)

What is a force?

• the PUSH or PULL on an object

• The MOTION an object creates

• The objects HITTING one another

• Going REALLY FAST

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the unit for FORCE?

• N (Newtons)

• lbs (pounds)

• g (grams)

• m/s (meters per second)

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Calculate the Net Force. 

• 60N, Left 
• 40N, Right 
• 0N
• 60N, Right

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NGSS.HS-PS2-1

Which force always pulls downward on objects?

• Support force

• Friction force

• Gravity

• Air resistance

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NGSS.MS-PS2-4

A change to an objects motion is caused by...

• Balanced forces

• Unbalanced forces

• Acceleration

• Velocity

Tags

NGSS.MS-PS2-2

What forces are acting on a dropped book that falls to the floor?

• Gravity only

• Gravity and air resistance

• Air resistance

• Friction only

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A falling object is pulled down by the earth. The earth is pulled up toward the object. Why doesn’t the earth move?

• Only the earth has gravity.

• The Earth has a very large mass and a small acceleration.

• The Earth has a very small mass and a large acceleration.

• Air resistance gets in the way.

Tags

NGSS.MS-PS2-4

This test paper is sitting at rest on your desk. Which of the following statements best describes this situation?

• There are no forces acting on your paper.

• Your paper pushes on the desk only.

• The desk pushes on your paper only

• The forces acting on the paper are balanced.