Physics Flashcards
if the slope on a motion graph is gradually increasing to the right, it is…
moving forward to a constant speed
If the slope of a motion graph is gradually decreasing to the right, it is…
moving in reverse
if the slope on a motion graph in a horizontal line to the right, it is…
an object at rest
if the slope on a motion graph starts from a negative position then gradually increases to the right, it is…
moving forward at a constant
if the slope on a motion graph is gradually increasing to the right, the velocity is…
increasing velocity/speed
If the slope of a motion graph is gradually decreasing to the right, the velocity is…
decreasing velocity/slowing down
if the slope on a motion graph in a horizontal line to the right, the velocity is…
at a constant speed
if the slope on a motion graph starts from a negative position then gradually increases to the right, the velocity is…
slowing down before it hits the x axis then the velocity increases/speed
scalor
measurement
vector
direction
the formula for speed is
speed = distance/time
the formula for velocity is
velocity = distance/time
Delta symbol means
change
the formula for average speed is
average speed = total distance/ total time
acceleration
a change in velocity
what is the formula for acceleration
acceleration =
velocity(final) -velocity(initial)
/time
units for acceleration
m/s(squared)
a constant velocity means…
no acceleration
the slope of positive acceleration(speeding up) is…
a curved to the right slope
the slope of a negative acceleration(slowing down) is…
a curved to the left slope
+ v + a is
speeding up
- v - a
slowing down
what is the formula for weight
weight = (mass) (gravity)
the force gravity is also known as…
weight
perpendicular to a surface…
normal force
law of inertia
- newtons 1st law of motion
-an object at rest/motion remains that way until a force acts upon it
law of acceleration
- newtons 2nd law of motion
-the force of an object is directly proportional to acceleration
law of action and reaction
- newtons 3rd law of motion
-for ever action there is an equal and opposite reaction force
friction is
a force opposite to motion. this is always a reaction force
the units for force is
Newtons
net force is…
the sum of all forces
all masses have…
gravity
what is the relationship between mass and gravity
it is a direct relationship
what is the force of gravity formula
FG = g( (m1) (m2) ) / r(squared)
the formula for work is…
w = (force) (distance)
the unit for work is…
Joules
potential energy from gravity is…
stored energy based on the height above the ground
the formula for potential energy is…
PE = (mass) (gravity) (height)
the units for potential energy is..
joules
kinetic energy
energy because of motion
the formula for kinetic energy is…
KE = 1/2 (mass) (speed [squared])
the units for kinetic energy is…
joules
what is the formula for power
power = energy/time = work/time
Which two energies are combined to give us Mechanical Energy?
Potential and Kinetic
F = ma, what kind of relationship (direct or inverse) exists between each of the following
F and a?
F and m?
m and a?
- direct
- direct
- inverse
