motion - a change in an object's position or place with respect to time and in comparison with other objects, unbalanced forces - forces that cause motion because they are unequal, balanced forces - forces that do NOT cause motion because they are equal, forces that cause motion - magnetism, push, pull, gravity, speed - the rate of change of position or distance traveled with respect to time, velocity - a measurement of the speed AND direction of an object, acceleration - a change in motion caused by unbalanced forces: speeding up, slowing down, or turning, formula for FORCE - F = m x a (mass x acceleration), formula for VELOCITY - V = d/t (displacement divided by time), formula for SPEED - S = d/t (distance divided by time), unit of measure for velocity - always measured in m/s (meters per second), unit of measure for distance - m (meters) , unit of measure for speed - m/s (meters per second), unit of measure for mass - g or kg (grams or kilograms), unit of measure for force - N (Newtons), unit of measure for weight - N (Newtons) or lbs./oz. in the USA, formula for WORK - W = f x d (force x distance), unit of measure for acceleration - m/s2, speed examples - 25 mph, 4 m/s, 300 m/s, velocity examples - 55 mph West, down 2 m/s, 40 mph South, motion line graph that is a flat line - shows no motion, sitting still, motion line graph that is a straight diagonal line - shows a constant/steady pace or speed, motion line graph that is curved - shows acceleration speeding up or slowing down, mass - the amount of matter an object contains, weight - the measure of the force of gravity pulling on an object, gravity - a force that pulls objects toward each other, Newton's 1st law - a body at rest will stay at rest and a body in motion will stay in motion UNLESS it is acted upon by a force, Newton's 2nd law - Force = Mass x Acceleration, Newton's 3rd law - For every action there is an equal and opposite reaction, friction - a force that resists the motion of 2 surfaces sliding across one another,

Unit 5: Force & Motion

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