Forces
Name a force that is acting on the book that is laying on the desk.
Push from the desk, pull of gravity
Would a magnet be attracted to a penny?
No
What is mass?
the amount of particles in an object
What type of metal is attracted to magnets?
Iron
What unit do we measure mass in?
grams or kilograms
Why do curlers rub the ice with the broom?
to smooth the ice and create less friction so the stone will go further
Would a magnet be attracted to a barbie?
No
How do we know forces are balanced?
They are not moving.
How do we change the strengh of a magnetic force?
add more magnets
What unit do we measure force in?
Newtons
Name a force that slows down a car
friction or gravity
Would a magnet be attracted to a fridge?
yes, it is made of metal
beam, fulcrum, level
What would happen between two magnets as they attract?
the would come together
Describe what happened to the car when we added more mass to the string.
The car went faster and further the more mass we added.
Your little brother is pulling on the toy. You are also pulling on the toy. Neither you or your little brother are moving. Are the forces acting on the toy balanced or unbalanced?
balanced
What poles would REPEL?
North and north or south and south
What is inertia?
an object at rest will remain at rest, and an object in motion will remain in motion, unless some outside force starts or stops the object
What would happen between two magnets as they repel.
the would push away from each other
What would go further a 5 pound car with 2 Newtons of force or a 25 pound car with 2 Newtons of force?
A 5 pound car
A car is going down a ramp. Are the forces acting on the car balanced or unbalanced?
unbalanced
What poles would ATTRACT?
north and south
What is gravity?
the force that pulls objects toward the center of a planet or other body
Help! I lost my earring in the classroom! What tool could I use to help me find it?
use a magnet!
What would go further a 5 pound car with 10 Newtons of force or a 5 pound can with 2 Newtons of force?
5 pound can with 10 newtons of force