Forces!

Who wins the tug of war with what net force?

• The person on the left with 20 N
• The person on the left with 80 N
• The people on the right with 20 N
• The people on the right with 100 N

Two forces act on an object at the same time. What is the net force of the system?

• 9 N to the right

• 9 N to the left

• 3 N to the left

• 18 N to the left

Forces can be described as

• pushes

• pulls

• pushes or pulls

• I don't know

Forces are measured in

• Newtons

• grams

• metres

• millilitres

What happens if forces are balanced?

• The object will move left

• The object will move right

• The object will keep moving at the same speed in the same direction

• The object will keep moving in the same direction but slow down

What happens if forces are unbalanced?

• The object will change direction or speed

• It will move left

• It will move right

• It will only slow down

What is air resistance?

• A type of motion

• A type of friction

• A type of magnet

• A type of truck

What is the equation for force from Newton's 2nd Law of Motion?

• F = mc

• F = ma

• F = mb

• F = m

In the force equation from Newton's Second Law,

• m = mass

• a = acceleration

• m= mass and a = acceleration

• m = mass and b = breadth

What can we say about the forces of an object that is not moving?

• there must only be one force acting on it

• The forces must be balanced

• the forces must be unbalanced

• it must be very heavy