Movement

third class lever

the energy an object has due to its motion

Sample Response: The seesaw is a long lever arm with the load at one end, the effort at the opposite end, and the fulcrum in the center. With both the second and third class levers, however, the fulcrum is at one end of the lever and both the load and effort are on one side of the fulcrum. The seesaw is closest in arrangement to a first class lever because it is the only class of lever with the fulcrum between the load and effort.

tendons

force

Sample: According to Newton's first law, the law of inertia, an object's velocity will not change unless it is acted upon by an outside force. This means that objects at rest tend to stay at rest, and objects in motion tend to stay in motion.

Mass is a measure of an object's inertial force, or how much it resists motion, and of the amount of matter in it. Weight is the measure of gravity's pull on objects. Mass is independent of gravity, so the mass of an object will be the same on both Earth and the Moon. Because weight is dependent upon gravity, and the Earth has a greater force of gravity than the Moon, an object on the Earth will weigh more than it will on the Moon.

First class levers have the fulcrum between the load and effort. This distinguishes first class levers from second and third class levers, where the load and effort are both on one side of the fulcrum.

first class lever

false

Velocity is how fast an object moves and acceleration is the rate of change in velocity.

second

false

A. the fulcrum between the effort and load B.effort applied in the same place "incorrect" C.two loads and fulcrums D.the fulcrum at one end of the lever "correct"

tension

where the components of the lever are located

true

false

true