movement related
What is friction?
A contact force that resists motion between 2 objects
What is the formula for Newton's second law of motion?
(Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass.)
f=ma
(force=mass x acceleration)
Can energy be destroyed?
no
are dominoes a form of wave?
yes
Is plasma a fourth state of matter?
Yes
What is force?
A push/pull upon an object
How do you calculate kinetic energy?
KE=1/2mv2
what is kinetic energy?
the energy of motion.
What are the highest and lowest points of a wave called?
crest (high) and trough (low)
why do you weigh different weights on different planets?
they have different gravitational pulls
What is a reference point used for?
You use it to describe your position in a place relative to another object/person
Formula for density.
d=m/v
If an object is high up off the ground what energy does it have?
potential gravitational energy
what are the most compressed and stretched out parts of a spring called?
compression and rarefaction
difference between molecule & compound?
(hint, all molecules arent compounds & all compounds are molecule)
compounds are made of different atoms
If a ball is rolling down a hill, what energy does it have the most of?
kinetic energy
what is a newton? (DON'T SAY IT'S A WAY OF MEASURING FORCE )
It's the force needed to accelerate a 1 kilogram object by 1 meter a second
What part of an object has the most impact on kinetic energy?
(speed, mass, etc)
speed
difference between wave and pulse?
pulse is one disruption while a wave is more
C12H22O11 what do he numbers indicate on the chemical formula?
(as in, there is x amount of T or whatever)
(C=carbon, H=hydrogen, o=oxygen, this makes sugar)
there is 12 of c, 22 of h, and 11 of o
define inertia.
The tendency of objects to resist any change in motion.
how do you calculate work?
work = force x distance
What is Newtons 3rd law?
When one object exerts a force on another, the 2nd object exerts and equal and opposite force.
What is the difference between a transverse and longitudinal wave?
Transverse waves move perpendicular to the direction of the wave & longitudinal waves move in the same direction as the disturbance (forward and backward)
who said, i think, therefor i am.
René Descartes