Midterm Flashcards
what are the steps of the scientific method
1 make observation
2 ask a question
3 hypothesis
4 experiment
5 conclusion/analysis
what are the three types of variables?
1 Independent- controlled by the scientist
2 Dependent- changed in response to the independent
3 control- allows for comparison so we if experiment works (constant)
physics?
a branch of science, studies the physical world, studies matter and energy and how they interact
position
where an object is located
distance
how far an object travels
displacement
change in position
speed
how far you traveled per unit time
velocity
change in position AND direction
acceleration
change in velocity per unit time
what is the difference between speed, velocity, and acceleration
speed is only how far
velocity is change in time and direction
acceleration is change in velocity per unit time
newton’s 1st law
an object in motion will stay in motion unless acted upon by an UNBALANCED force
law of inertia
Newton’s 2nd law
F=m*a
an objects acceleration is directly proportional to the force applied
Newton’s 3rd law
for every action there is an equal and opposite reaction
action reaction
mass
characteristic of an object that never changes; amount of matter in that object
weight
force of gravity acting on a mass
