Forces Mind Map
Newton's First Law
law of inertia
the state of motion of an object does not change as long as the net force acting on the object is zero
the rocket would be moving if the net force is not 0
Newton's Second Law
the acceleration of an object is equal to the net force acting on it divided by the object's mass
if you kicked a ball in space
it would keep going forever as there is no
air resistance, friction, gravity
would only stop if it hits something
if you use apply the same force to a truck and car
the car will have more acceleration
as it has less mass
Newton's Third Law
whenever one object exerts force on a second object, the second object exerts an equal and opposite force on the second object
when air rushes out of a balloon
the opposite reaction is that the balloon flies up
the lighter the rocket is
the water that shoots out the rocket
will propel the rocket
the greater the acceleration
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work
energy
Work = Force x Distance
Doing work??
ability to do work
potential energy
energy that is stored as a result of position or shape
example: spring
gravitational potential energy
depends on
mass, height, acceleration due to gravity
PE = mgh
kinetic energy
energy of motion
example: the ball builds kinetic energy as it drops
PE = potential energy
m = mass
g = acceleration of gravity
h = height