Force/Net Force
A push or pull
What is Force?
If you have two of the same size magnets and you increase the distance between those magnets, what happens to the force?
What is decrease/gets smaller?
True or False
Newton's 2nd law states that Force is equal to mass times acceleration (F=m*a)
What is true?
All magnets have a ____________ pole and a ___________ pole.
What is North and South?
True or False:
Earth has a magnetic field.
What is TRUE.
The unit for measuring force
What is a Newton?
Which scenario has the most force?
-two large magnets far apart
-two small magnets close together
-two large magnets close together
What is two large magnets close together?
___________ energy is the energy of movement.
What is kinetic?
The north pole of one magnet will____________ the south pole of another magnet.
What is attract?
True or False:
A magnet has an invisible magnetic field that extends beyond the magnet.
What is TRUE.
When forces are balanced, the net force is
What is 0?
True or False:
Rougher surfaces create more friction, so more force is needed to move something over the rougher surface.
TRUE
A child holding a ball above his head is an example of:
-Kinetic energy
-Potential energy
What is potential?
True or False:
If you cut a magnet in half, you have two smaller magnets - each with its own North and South pole.
What is TRUE?
A student touched a nail to a magnet, the nail picked up a paperclip and the paperclip picked up another paperclip. This is an example of a ________ _________.
What is temporary magnet?
Student A pushed on a cart with a force of 300 N. Student B pushed on the other side of the cart with 500 N. Which direction did the cart go? What was the Net Force?
What is toward student A, and 200 N.
True or False:
Larger magnetic force is due to increasing the size of the magnet and increasing the distance between magnets.
FALSE
You are in a tug of war contest. The other team pulls with 2000 N of force. How much force does your team need to exert in order to WIN?
What is anything above 2000 N?
How do you make magnets repel each other?
What is put like poles together (South to South or North to North).
What is the most common metal found in objects that are magnetic?
What is iron?
Steel, cobalt and nickel too
A student pushes a cart against a wall exerting 500 N of force. The cart doesn't move. How do you explain what happened?
What is the wall pushes back with 500 N of force?
True or False
Magnets stick to all metals
What is false?
When a force sets an object in motion, the moving object has _______ energy (energy of motion)
What is kinetic energy?
Iron filings on a plate move into a pattern when gently shaken above a magnet. What do the lines of that pattern represent?
What are the magnetic field lines or magnetic force?
When an object is MOVING, like a paperclip "jumping" to a magnet, we say that the forces acting on that object are ____________
What is UNBALANCED?