Force and Motion

A push or pull that can change the motion of an object

• Forces

• Velocity

• Mass

• Matter

In which direction would we apply force to get these objects to speed up?

• Left

• Right

• Left and right

• They are not moving.

Object A is less massive than Object B. Which object will be harder to slow down?

• Object A

• Object B

• We need to know their velocity to answer the question

• They are not moving

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces
• Friction forces

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

• The team on the right will win.
• They will not move (net force=0).
• The team on the left will win.
• Both teams will fall down.

A force that slows or stops motion when objects rub together.

• Friction
• Push
• Pull
• Magnetism

What is the net force in this picture?

• 17 N Right
• 3 N Right
• 3 N Left
• 17 N Left

What is Newton's First Law of Motion?

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction happens

Which of the following is NOT a way to reduce friction of an object?

• Apply a lubricant like grease.
• Roll an object instead of pushing it.
• Rough up the surface with sandpaper.
• Spray cooking oil on it.

As mass increases between objects, gravity

• decreases.
• disappears.
• stays the same.
• increases.