Contact/Non-contact Forces
The power to attract. It refers to the attraction to iron and other metals in electric currents and magnets
How do you know if an object is experiencing a balanced force?
At rest, constant speed and or direction, net force of 0.
The force that attracts a body toward the center of the earth, or toward any other physical body having mass.
Gravity
Net force greater than 0
Unbalanced Force
A push or pull on an object
force
Opposite magnetic poles or opposite charges do this when moved relative to each other
Attract
How do you know an object is experiencing an unbalanced force?
Change in motion (speed, direction, stops or starts)
Two factors that affect the gravitational pull between 2 objects.
Distance and mass
Net force equal to zero
Balanced Force
Like magnetic poles or like charges do this when they are moved relative to one another.
What is Repel
Total amount of force acting on an object
Net Force
The amount of gravitational pull on an object
Weight
Strength or amount of force
Magnitude
An electric current creates
magnetic field
An object at rest stays at rest, an object in motion stays in motion, unless acted upon by an unbalanced force.
Newton's 1st Law of Motion
Two objects with larger masses will have ________ gravitational pull than 2 objects with smaller masses.
more or greater
A boy is walking his dog. The dog is pulling with 30N of force and the boy is pulling back with 50N of force. What is the net force and direction of motion?
20N in the direction of the boy.
Name a contact force
friction
An object experiencing an electric field will have a property called a
charge
Tendency for an object to resist a change in motion.
Inertia
Will the mass of an object change in space?
No, mass is the amount of matter in an object. It is not the weight.
Two groups are playing tug of war. One group if pulling with a force of 50 N and the other group if pulling with a force of 50N. What is the net force and will there be a change in motion?
0N, balanced not change in motion.