INTRO TO PHYSICS AND CHEM TEST 2!!

motion

motion

when an object changes it postion

reference point

an indicator that orients you; the place from where you measure the record, or witness an event

distance

(d) how are an object has moved

displacement

distance and direction an object changes in position; difference from starting to end point

speed

(s) the distance an object travels per unit of time

speed formula

s= d/t

average speed

total distance traveled divided by the total time you traveled

instantaneous speed

the speed at any given point, what shows up on your speedometer

velocity

(v) speed of an object and the direction of its motion

slope

the steepness of a line

momentum

the product of an object’s mass and velocity

acceleration

(a) rate of change of velocity over time

force

(f) a push or pull one object exerts on another

net force

the combining of forces when two or more forces act on an object

balanced forces

forces that are equal in size and opposite direction

unbalanced forces

forces that are not equal in size and opposite direction net force causes the object to move in the direction of the force

Newton’s first law of motion

an object will move at a constant velocity until a new force acts on it

Inertia (Law of inertia)

the tendency of an object to resist a change in motion

friction

resistance to motion when two objects are in contact with in another

air resistance

resistance an object feels when traveling through the air

gravity

the attraction two objects have on one another

stratic friction

force between two surfaces that are not moving past eachother

sliding friction

force between two surfaces that are

rolling friction

force between a rolling object andthe surface that it rolls on

terminal velocity

steady speed achieved by an object freely falling

newtons 2nd law

a net force acting on an object to accelerate in the direction of the net force

weight

the force of gravity on an object

mass

amount of matter in an object

newtons 3rd law of motion

every action has an equal and opposite reaction

law of conservation of momentum

momentum is never created or destroyed in a collision, it is only transferred.