around 400 b.c. , Aristotle thought that a object's fall depended on its _____
Galileo challenged Aristotle's idea stating that ___ objects fall at the same ____
objects with more ____ need more ____ to experience the same rate of fall
9.8 m/s 2
all objects accelerate towards the earth at the same rate of:
even though all objects accelerate at the same rate, not all objects experience the same velocity because of ______ ________
this force called ________ ________ will eventually stop the acceleration of all objects on earth.
newtons 1st law
an object at rest will stay at rest until it experiences an unbalanced force and an object in motion will stay in motion unless acted on by an unbalanced force.
newtons 2nd law
an objects acceleration is dependent on its mass and the force acting on it
newtons 3rd law
for every force there is an equal and opposite force
TRUE or FALSE: force pairs can act on the same object
tendency of objects to resist changes in motion.
____is the measure of an object's inertia
momentum is the measure of an objects
momentum can leave a object but only if it is _______ to another object
p= m x v
how do you calculate momentum?
law of conservation of momentum
momentum cannot be created or destroyed
inelastic and elastic
momentum transfers in 2 ways......______ and _______
fluid is any substance that is easily ____
pressure is a description of a ____ pushing on a _____
how do you measure surface?
equation for pressure
the two main types of pressure
atmospheric pressure is caused by the layer of _____ surrounding the earth.
fluids in our body push out
why doesn't atmospheric pressure crush us?
water pressure is caused by ____
fluids exert an upward force on a objected called _____ _____
when you put a object in a full container of water what happens?
buoyant force, weight
objects will sink based on relationship between _______ and _______ of object
what is the density of water?
faster the faster moves, more pressure decreases