when a object changes its position relative to a reference point
100
what is Inertia
The tendency of an object to resist being moved or, if the object is moving , to resist a change in speed or direction until an outside force acts on the object
100
what is work
The transfer of energy to a body by the application of a force that causes the body to move in the direction of the force?
100
Lever, pulley, incline plane, wedge, screw, and wheel and axles
What are the names of the six simple machines?
100
The energy that an object has because of the position, shape, or condition of the object
What is potential energy
200
what is projectile motion
What is the curved path of and object followed when thrown, launched or otherwise projected near the surface of the earth.
200
What is Newton's Second Law
which of newton's laws says that the unbalance force acting on an object equals the object's mass times its acceleration.
200
380 J
How much work would it takes a man to lift each load, assuming he lifts a 2.0 m and exerts an average force of 190 N
200
what is simple machines
one of the six basic types of machines, which are the basic for all other forms of machines
200
PE= 2.2 x 10 (fourth) J
A 65 Kg Rock climber ascends a cliff. what is the climber's gravitational potential energy at a point 35m above the base of the cliff
300
what is static friction
The force that resists the initiation of sliding motion between two surfaces that are contact and at rest.
300
115 N
A zookeeper lift a stretcher that holds a sedated lion. The total mass of the lion and stretcher is 175 kg, and the lion's upward acceleration is 0.657 m/s (squared). what is the unbalance force nescesary to produce this acceleration of the lion and the stretcher?
300
What is power
A quantity that measures the rate at which work is done or energy is transformed
300
First class, second class and third class
Name the three different types of categories the levers are listed in?
300
What is kinetic energy
The energy of a moving object due to the object's motion
400
-3.25 m/s (squared)
A rider is slowing down from 13.00 m/s to 3.25 m/s over a period of 3.00s, find out the rate at which velocity changes by calculating the acceleration
400
the speed of an object in a particular direction.
What is velocity?
400
mechanical advantage=output force = input distance
input force output distance
What is the equation for mechanical advantage?
400
What is wedge
What turns a downward force into two forces directed out to the sides
400
The amount of work an object can do because of the object's kinectic and potential energies
What is mechanical energy?
500
what is force
an action exerted on a body in order to change the body's state of rest or motion; force has magnitude and direction
500
9.8 m/s (squared) down
A flowerpot falls off a second-story windowsill. The flowerpot starts from rest and hits the sidewalk 1.5 later with a velocity of 14.7 m/s. find the average acceleration of the flowerpot?
500
P=5 KW
It takes 100 kJ of work to lift an elevator 18 m. If this is done in 20s. what is the average power of the elevator during the process?
500
what is a compound machine
Machines that are made of more than one simple machine