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### 36 Cards in this Set

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 symbol for acceleration due to gravity g momentum changes if.. VELOCITY or MASS CHANGE unit for acceleration due to gravity m/s/s or m/s2 an object at rest stays at rest unless acted upon by a net force NEWTON'S FIRST LAW an object traveling at a constant velocity will continue at that velocity unless acted upon by a net force NEWTON'S FIRST LAW a force that acts in the opposite direction to the motion of a falling object AIR RESISTANCE a force that acts in the opposite direction to the motion of an object FRICTION friction caused by the air AIR RESISTANCE another way to write N kg.m/s2 symbol for momentum p unit for momentum kg.m/s two forces acting in opposite directions with equal strengths ACTION-REACTION PAIRS or BALANCED FORCES the largest velocity able to be reached by a falling object TERMINAL VELOCITY unit for force N or kg.m/s2 symbol for force F symbol for weight w unit for weight N or kg.m/s2 weight is a special example of ... FORCE gravity is a special example of ... ACCELERATION resistance to change in motion INERTIA inertia is equal to... MASS symbol for mass m unit for mass kg unit for momentum kg.m/s equation for momentum p = m x v occurs when air resistance equals gravity and the object no longer accelerates TERMINAL VELOCITY falling objects accelerate due to... NET FORCES equation for weight w = m x g equation for force F = m x a when one object exerts a force on a second object, and the second objects exerts and equal and opposite force back on the first NEWTON'S THIRD LAW every action has an equal and opposite reaction NEWTON'S THIRD LAW F = m x a NEWTON'S SECOND LAW Earth's acceleration due to gravity 9.8 m/s/s force caused by gravitation attraction between Earth and an object WEIGHT another word for action-reaction pairs BALANCED FORCES which changes on the Moon, mass or weight? WEIGHT