Force Diagrams

This diagram can be used to indicate which of the following? (TWO correct answers)

• An object at rest

• An object accelerating

• An object decelerating

• an object moving at a constant velocity (speed)

• (Trick question -- there is only one correct answer)

Are the forces balanced or unbalanced?

• Balanced

• Unbalanced

The force that pulls things toward earth.

• Speed
• Gravity

Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?

• Balanced
• Unbalanced

This object is being pushed on a surface. What direction would it be moving? (pick all that apply):

• up

• down

• left

• right

If these boys 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.

What is the net force?

• 40 N left

• 0 N Balanced

• 400 N right

• 40 N right

Calculate the net force acting upon the object.

• 10 N east
• 0 N
• 14.1 N east
• 20 N north

Calculate the net force acting upon the object.

• 10 N north
• 10 N south
• 14.1 N east
• 0 N

What is the net force?

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