Newton's Laws of Motion
Newton's first law of motion.
An object at rest stays at rest until and external force moves it
Where the magnetic force is the strongest
the poles of a magnet
Kinetic energy is ______
Kinetic energy is the faster an objecy moves the more kinetic energy it has
Newton's second law of motion
The more mass an object has the more force it needs to accelerate. F=M*A
What happens when the poles are the same
they repel
Potential energy is
potential energy is stored energy
Newton's 3rd law of motion
Every action has an opposite and equal reaction.
What happens when the poles are opposite
they attract
As speed increases kinetic energy____
increases
Equation for acceleration
A = F/M
The 3 ferrmagnetic materials
iron,nickle, and cobalt
As speed decreases, kinetic energy_____
decreases
Equation for force
m*a
Magnetic force is _____
a noncontact force that attracts iron and other materials with magnetic qualities.
How do you calculate kinetic energy
0.5*mass*speed*speed