physics and motion basics
what was Galileo galilie's prominent law?
the law of falling bodies
what is the definition of a force
a push or pull exerted on an object. Forces occur in pairs and supply the energy that causes objects to change their velocity.
what is weight
gravitational force acting downward on an object.
what is speed
the distance travled by an object divided by the time taken to travel that distance
what is the definition of accelaration
a measure of how much an object's velocity changes in a certain amount of time.
what is the study of physics?
laws of motion
a force is measured in what unit
Newtons
what is gravity
a force that pulls objects in the universe toward one another
what unit is speed measuerd in
meters per second
what is the units used for accelaration
m/s2
what was Isaac Newton's laws?
1. Universal Gravitiotion
2. the three laws of motion
what are the two types of primary forces?
Friction and gravity
what is mass
total of matter inside an object.
what is velocity
the speed of an object in a particular direction
what is the formula for acceleration
a= V1-V2/t
what were Isaac Newtion's three laws of motion in order
1. An object at rest stays at rest, and an object in motion stays in motion in a straight line unless acted on by an unbalanced force.
2. The acceleration of an object depends on the net force applied and the mass of the object.
3. For every action force, there is an equal and opposite reaction force.
what is a net force
the total forces acting on an object
Chris throws a baseball 60 meters in 4 seconds. what is its speed
15m/s
what is resultant velocity
the combined velocity when two or more velocities affect each other
what is V1 and V2
V1- starting velocity
V2- ending velocity
name all the formulas of speed, time, and distane
speed=Dxt
time=d/v
distance=sxt
what is a balanced and unbalanced force?
balanced- two equal forces pushing/pulling in exactly opposite directions. They completely cancel out and do not cause a change in motion.
unbalanced- forces that are unequal. they always cause a change in motion in the direction of the net force
you run at 12m/s for 15 minutes how far do you go
10800m
what is the difference between vector and scalar
scalar- speed
vector- velocity
name 5 ways and object can accelerate
start moving, move faster, stop moving, move slower, and change direction