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Science 8-obj:4


speed To calculate the _______ of an object, divide the distance the object travels by the amount of time it takes to travel that distance (S=D/T).
velocity. Speed in a given direction
Force is a push or pull
balanced force is when all forces acting on an object are equal and it will not cause a change in the object’s motion.
unbalanced force is when all the forces acting on an object are not equal and it will cause a change in the object’s motion.
Net force is the sum of all forces acting on an object
Newton 1st Law of Motion states that an object in motion, or an object at rest, will stay that way unless acted upon by an outside force. This law is also known as the law of inertia
Inertia is the tendency of an object to keep doing whatever it is doing at the moment.
Newton 2nd Law of Motion that the force on an object is equal to the mass of the object multiplied by the object’s acceleration (F=MA
Newton 3rd Law of Motion states that for every action there is an equal and opposite reaction
Acceleration is the rate at which velocity changes. It involves increasing speed, decreasing speed or changing directions
potential energy The energy of position
kinetic energy. the energy of motion
Mechanical energy is related to the motion or position of matter. Kinetic energy and potential energy are two forms of mechanical energy
Thermal energy __________ is also known as heat energy
Chemical energy is stored in the bonds between atoms; the energy is released when the bond is broken.
three There are ___ types of waves transverse, longitudinal, and surface.
Created by: HBend