laws of gravity
difference between weight and mass
mass is the amount of matter in an object and does not change, weight is how gravity affects that matter and changes depending how much gravity to are under.
equation for power
P= work/time
what is velocity
the rate of displacement of an object over a certain amount of time as well as the direction this abject is moving
newtons second law of motion
F=MA
equation for work
Work= Force/displacement
what is net force
In physics, the net force is the total force acting on an object, which is found by combining all the individual forces acting upon it
what are ways an object can accelerate
accelerate, change direction rapidly, both
newtons first law
law of inertia, object in motion stays in motion and object at rest stays at rest unless an outside force acts upon it
requirements for works to be done to an object
the object must have had some kind of displacement done to it and have force done to it.
how to find net force
add forces pointing in the same direction together and subtract forces that are pointing in different directions
How do you calculate acceleration?
velocity final Velocity initial/ time
(Vf-Vi/t)
what is a magnitude
a scale of size of something (earthquake)
newtons third law
every action has has an equal and opposite reaction
what are the units for acceleration
M/s2 (meters/ seconds/ seconds)
definition of inertia
a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force
what is the difference between a vector and a scale quantity
scalar has magnitude but no direction, vector has magnitude and direction