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, speed formula
mass a measure of how much matter an object or a person has
weight a force which is measured in newtons (N)
weight = mass x gravitational force
density a measure of how much mass an object contain per unit of volume (g/cm²)
density = mass / volume
what can a force change? -shape
-size
-direction of motion
-speed
hooke's law the extension of an elastic object is directly proportional to the force
applied to it.
f = kx (force = constant * extension)
limit proportionality The limit of proportionality is the is the point beyond which Hooke's law is
no longer true when stretching a material. The elastic limit is the point
beyond which the material you are stretching becomes permanently
stretched so that the material does not return to its original length when the
force is removed.
power is measured in watts (W)
energy and work is measured in joules (J)
kinetic energy energy of motion
K.E = ½mv²
mass should be in kg
velocity should be in m/s