Laura's Geophysics Test That She's Dumb & Didn't Study For flash cards

Set: Laura's Geophysics Test That She's Dumb & Didn't Study For

Familiarize		Learn		Test
Play Scatter			Play Space Race

	Term	Definition
	rolling friction	if a round object rolls over a flat surface; type of kinetic friction
	kinetic friction	the force that opposes the movement of 2 surfaces that are in contact and are sliding over each other
	static friction	the force that resists the initiation of sliding motion between 2 surfaces that are in contact and at rest; greater than kinetic
	unbalanced forces	ex: 2 students pushing against 1 student
	balanced forces	don't change motion; don't cause an object at rest to keep moving
	velocity vs time	defined as the rate at which velocity changes over time. velocity includes both speed & direction, so an object accelerates if its speed and/or direction change
	acceleration	the rate at which velocity changes over time
	accelerating	you are _____ whenever your speed changes
	speed	you are accelerating whenever your __ changes. a cyclist's __ increases by 1 m/s every second
	acceleration	a change in speed, direction, or both change
	velocity	the speed of an object in a particular direction; EX: 5 m/s to the north
	measuring speed	must measure: 1. distance traveled by an object; 2. time it took to travel that distance, m/s, km/h
	speed	distance/time
	velocity	d/t
	speed	the distance traveled divided by the time interval during which the motion occured
	displacement	the change in position of an object
	distance	how to measure __: measure the path you took
	motion	an object's change in position to a reference point

No Messages