True or False: Heavier objects require more force to move and stop.
True
10
What do we call the overall / single force acting on an object?
Resultant Force
10
What is the type of force when 2 surfaces rub together?
Friction
15
What is the magnitude of a force?
The size of the force acting on an object.
15
True or False: Friction speeds up moving objects.
False: Friction slows down moving objects.
10
True or False: Friction allows us to grip objects and to stand up are advantages.
True
10
True or False: Wet roads allow more friction than dry roads.
False
10
Name 2 disadvantges of friction.
Any 2: slows moving objects, produces unnecessary heat and noise, damages / wears out surfaces that are in contact.
15
What is the force that keeps everything on Earth from flying into the air?
Gravity
10
What is the equation to calculate force? Force= _________ _____ _________
Force = Mass x Acceleration
15
True or False: Lighter objects require less force to stop than heavier objects.
True
10
Name 2 advantages of friction.
Any 2: allows objects to remain still, allows us to grip things and walk, prevents slipping, allows moving objects to stop, produces heat to start a fire.
