Newton's 1st Law and Forces

What is a friction force  acting on an NON- moving object.

• Static friction 
• Fuild friction 
• Rolling friction 
• Sliding Friction 

The type of friction that occurs when two surfaces slip past each other describes...

• static friction 
• sliding friction 
• rolling friction 
• fluid fiction 

Which force is so low that it causes the man to slip and fall?

• Gravity
• Friction
• Air Resistance
• Motion

A ____________ is a push or a pull on an object.

• friction
• force
• magnet
• gravity

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Examples of forces that make something move are...

• pushes
• pulls
• both pushes and pulls

Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

• Balanced
• Unbalanced

A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?

• The cart will speed up.
• The cart will slow down.
• The cart will move at a constant speed in a straight line.
• The cart will fly to never never land!

Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?

• Balanced
• Unbalanced

Are the forces acting on the rope balanced or unbalanced?

• Balanced
• Unbalanced