Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
lever
|
a beam or bar that rotates around a fulcrum
|
|
|
inclined plane
|
a straight, slanted surface used to raise an object
|
|
|
speed
|
the measure of how fast an object changes position
|
|
|
velocity
|
a measure of an object's speed and direction
|
|
|
acceleration
|
the rate of change in velocity over a period of time
|
|
|
newton
|
a metric unit used to measure force
|
|
|
work
|
the result of a force applied to an object causing it to move
|
|
|
load
|
the force a simple machine moves when effort is applied
|
|
|
energy
|
the ability to do work
|
|
|
joule
|
a metric unit used to measure work, equal to one newton meter
|
|
|
simple machine
|
a device used to make work easier
|
|
|
fulcrum
|
the point where a lever rotates or pivots
|
|
|
effort
|
the force applied to a machine
|
|
|
grade
|
the steepness of a slope
|
|
|
Speed formula
|
speed=distance divided by time
|
|
|
Grade Formula
|
Slope=rise divided by run
|
|
|
Force Formula
|
Force=mass x acceleration
|
|
|
Work Formula
|
work=force x distance
|
|
|
First-class lever
|
oars, seesaw, crowbar
|
|
|
Second-class lever
|
wheelbarrow, paper cutter
|
|
|
Third-class lever
|
broom, rake, hockey stick
|
|
|
Crowbar
|
lever
|
|
|
Wheelbarrow
|
lever
|
|
|
Seesaw
|
lever
|
|
|
Gears
|
wheel and axle
|
|
|
Ax
|
wedge
|
|
|
Twist-off bottle cap
|
screw
|
|
|
Ramp
|
inclined plane
|
|
|
Knife
|
wedge
|
|
|
Relationship between effort's distance to the fulcrum and the amount of effort needed to move the load
|
As the distance from the effort to the fulcrum decreases, the amount of effort increases
|
