Forces - Year 9 Physics

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

What is the unit to MEASURE force?

• Kilogram

• Meter

• Pounds

• Newton

When forces are _________ the object DOES NOT move.

• unbalanced
• balanced
• heavy
• light

What is the net force of an object that is not moving?

• 0 N
• 100 N
• Upward force
• 10 N

The sum of all forces acting on an object.

• Contact Force
• Balanced Force
• Unbalanced Force
• Net Force

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

Which example would be a balanced force?

• Train moving at a constant speed in the same direction.

• A skier going down a hill.

• A basketball being passed to a teammate.

• An apple falling to the floor.

Calculate the Net Force. 

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

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.

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down