momentum impusle

# momentum impusle - Accelerating Trajectory Instantaneous...

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Instantaneous velocity at any time Inst. Vel. = initial velocity + acceleration x time V = U + at Average velocity (HOW FAST) V(average) = (V + U)/2 Distance traveled (HOW FAR) S = Ut + (1/2) at 2 Accelerating Trajectory

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Free fall under 10 m/s2 Time velocity distance 00 0 22 0 20 1 10 5 4 40 80 t gt 1/2gt 2
Throw a ball up at 30 m/s under 10 m/s2 gravity

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mass The quantity of matter in an object. A measure of its sluggishness. Weight The force upon an object due to gravity Weight = mass x acceleration due to gravity
Gravity on the surface of moon is 1/5 th that on earth. What is the weight of a 10 kg object on moon ? What is it on earth ? What is the mass on moon or on earth ? g(earth) = 10 m/sec2, g(moon) = 2 m/sec2

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20 newtons 100 newtons 10 kg for both
Force g reaction to the applied force for every action, there is an equal and opposite reaction NEWTON'S THIRD LAW OF MOTION

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Tire pushes on the road, road pushes on the tire Rocket pushes on the gas, gas pushes on the rocket Man pulls on the spring, spring pulls on the man Action and reaction occur on different masses, and therefore Do not cancel each other.
Force, Net Force, Mechanical Equilibrium Newton's second Law Mass, weight, and their relationship Gravity Newton's Third Law

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## This note was uploaded on 04/05/2008 for the course ENG 10 taught by Professor Atul-parhak during the Spring '08 term at UC Davis.

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momentum impusle - Accelerating Trajectory Instantaneous...

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