Friction
What is friction?
Friction is a force that opposes the relative motion between surfaces in contact, acting to slow down or stop objects
What are the poles called on a magnet?
North Pole and South pole
Is gravity part of Non-Contact or contact forces?
Non-contact
What are some examples of applied force?
What are the main types of electricity applications?
Lighting, Heating/cooling, computers, machinery, etc...
If you were to shuffle your feet on a carpet and then touch a doorknob what would happen?
You would feel a tiny shock
What types of objects are attracted to magnets?
Iron, Nickle, Steel, etc...
Who developed the law of universal gravitation?
Issac Newton
Is applied force non- contact or a contact force
Contact force
What is static electricity?
Static electricity is the build-up of electric charge on the surface of an object.
What would happen without friction
Anything that is not on a flat surface would start sliding, as if you were on ice
What is a magnetic force?
A magnetic force is the push or pull between objects that have a magnetic field this force allows magnets to attract or repel without touching.
What would happen if gravity wasn't a thing?
Life would not exist, and the planets would not stay in their paths
Who invented applied force?
Issac Newton
Who discovered electricity?
Benjamin Franklin
Which surface has close to no friction?
Ice
why do magnets attract or repel each other?
Magnets attract or repel based on their magnetic fields and the nature of their north and south poles
True or false: If you went to another planet, would your weight be the same as your weight on earth? explain
False, because each planet has a different gravitational force, which is directly related to its mass and size.
What is applied force?
Applied forces is the direct contact between two objects
What are the two types of electrical current?
AC and DC
What does friction depend on?
Friction depends on velocity
which two scientist discovered that moving electric charges create magnetic fields?
Michael Faraday and James Clerk
What does gravity depend on?
Mass and Distance
What are effects of applied force?
applied force can cause an object to: Start moving, Change its motion, change its direction, and change its shape or size
What is ohms law?
Ohm's law describes direct linear relationship between voltage and current and resistance in an electrical circuit