3rd Nine Week Exam Flashcards
defintion of motion
the action or process of moving or of changing place or position
instantaneous speed
how fast an object is moving at a instant of time
constant speed
the speed of an object remains the same
average speed
calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance
difference between speed and velocity
speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement
SI unit for momentum
kilogram meter per second (Kg m/s)
path of a projectile
starting point, peak, then falls
what is free fall
free fall is any motion of a body where gravity is the only force acting upon it
difference between meteor, meteorite, and meteoroid
a meteor is the the first phase and it’s moving fast and is still in the atmosphere, a meteoroid is the second phase and happens before it enters Earth’s atmosphere, the third phase is the meteorite which happens when the meteoroid touches the ground on Earth.
definition of acceleration
rate at which velocity changes with time in terms of both speed and direction
what is the force of gravity dependent on
the mass of each object and the distance between the centers of the two objects
what is the equation for kinetic energy
KE = 1/2 m v2
what was the first planet studied by the Voyager Space Probe
Jupiter
what type of waves are water waves
transverse waves
what type of waves are seismic waves
combination of transverse and compressional depends on the medium. they can travel through earth and along earths surface. (earthquakes)
