Flashcards in Chapter 20 Vocab Deck (20)
Newton's 2nd law of motion
"The acceleration of an object depends on the mass of the object and the amount of force applied"
Newton's 3rd law of motion
"Whenever one object exerts a force on a second object. The second object exerts an equal and opposite force on the first."
the motion of a body when only the force of gravity is acting on the body
The curved path that an object follows when thrown launched, or otherwise projected near the surface of Earth
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.
a quantity defined as the product of the mass and velocity of an object.
Newton's 1st law of motion
"An object at rest remains at rest. And an object in motion remains in motion out constant speed and in a straight line unless acted on an unbalance force."
the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction
a machine made of more that one simple machine
a simple machine that consists of an inclined plane wrapped around a cylinder
a simple machine that is made up of two inclined planes and that moves; often used for cutting
Wheel and axles
a simple machine consisting of two circular objects of different sizes; the wheel is the larger of the 2 circular objects
a simple machine that consists of a wheel over which a rope, chain, or wire passes
a simple machine that consists of a bar that pivots at a fixed point called a fulcrum
the unit used to express power; equivalent to joules per second
a device that helps do work by either overcoming a force or changing the direction of the applied force
the rate at which work is done or energy is transformed.
the unit used to express energy; equivalent to the amount of work done by a force of 1 N acting through a distance of 1 meter in the direction of the force.
the transfer of energy to an object by using a force that causes the object to move in the direction of the force