Force and Motion 1
What is a force?
A push or a pull
Calculate the net force
a student pulls the rope the left 123 N, while another student pulls the rope to the right 107N. What will happen?
The rope will move 16N to the left.
Action: The kid pushes the door
Reaction: ?
Reaction: the door pushes back on the kid and moves forward
Has a north pole and a south pole
Magnets
True or False:
Iced lake has more friction than carpet.
False
What is force measured in?
Newtons (N)
A force that slows down objects when they rub against each other
What is friction?
Friction occurs on the _______ of an object.
Surface
Static friction is the resistance of a resting object to begin moving.
True
A paperclip is pulled across a desk without anyone touching it.
Gravity, Magnetism or Friction?
Magnetism
A change in position
What is motion?
Who is one of the fathers of force and motion?
Sir Issac Newton
A sled going down a hill is an example _______ friction
What sliding?
What are the 3 types of friction?
Sliding
Rolling
Fluid
Earth Stays in orbit as it travels around the sun.
Gravity, Magnetism, or Friction?
Gravity
An object's resistance to any change in motion
What is friction?
Newtons 3rd Law is ?
every force has an equal and opposite reaction
A change in a moving object's speed or direction is..
What is Acceleration?
Give an example of fluid friction.
swimming, free falling in the sky
A person riding a bicycle finds it harder to pedal when they go from pavement to grass.
Gravity, Magnetism or Friction
Friction
Calculate the net force.
27N to the left and 62N to the right
35N to the right
One way to increase the force on an object is to increase the ____________?
momentum
True or False
Gravity is a force that only pushes an object downward.
False
gravity pulls objects downward and together
True or False
Force and motion can only move horizontally.
False. Force and motion happen in all directions
Causes an object to start or stop moving, accelerate or change direction.
Unbalanced Force