happen when objects touch each other. When you kick a ball, open a door, or write with a pencil, your hands or feet must touch the object to make it move, stop, or change shape.
What are contact forces?
A student kicks a soccer ball.
What is applied force?
An apple falls from a tree.
What is gravity?
A bus suddenly stops.
What is the First Law of Motion?
happen when two objects interact without touching each other. Field forces can create a push or a pull even at a distance.
What are field forces?
A child slides down a slide and slowly stops.
What is friction?
A magnet attracts a paper clip.
What is magnetism?
Pedaling a bicycle harder.
What is the Second Law of Motion?
is a push or a pull on an object.
What is force?
A child holds a kite with a string.
A balloon rubbed on hair sticks to a wall.
What is electrostatic force?
A swimmer moves through the water.
What is the Third Law of Motion?
When you kick a ball, open a door, or write with a pencil, your hands or feet must touch the object to make it move, stop, or change shape.
What is contact force?
A book is resting on a table.
What is normal force?
Two magnets push away from each other.
What is magnetism?
A soccer ball stays still on the field until a player kicks it.
What is the First Law of Motion?
can create a push or a pull even at a distance.
What is a field force?
A parachutist falls toward the ground.
What is air resistance?
A ball falls after being dropped.
What is gravity?
Pushing an empty shopping cart vs. a full shopping cart.
What is the Second Law of Motion?