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Rube Goldberg Device Prezi

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by

alana beyer

on 31 May 2013

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Transcript of Rube Goldberg Device Prezi

Inertia Newton's First Law Newton's Second Law Newton's Third Law Tension Compression Buoyancy Density Change in Position Speed Velocity Acceleration Distance/Time Graph Contact Forces Gravity Friction The law of inertia states that an object at rest wants to stay at rest and an object in motion stays at the same speed in the same direction acted on by unbalanced forces. First law: If there is no net force on an object, then its velocity is constant. The object is either at rest (if its velocity is equal to zero), or it moves with constant speed in a single direction. OR An object at rest likes to stay at rest and an object in motion likes to stay in motion objects like to keep on doing what they are already doing Buoyancy is the upward force acting on an object that is immersed in a fluid. Force = Mass * Acceleration OR F=ma Velocity is the rate of change of the position of the object Density is the mass per unit volume. The equation to figure out density is
D=M/V The more acceleration is exerted on an object, the more force it has, the more mass the object has, the less force it has The rate of change of an objects position S=D/T Every action has an equal and opposite reaction. Elastic Forces The forces that allow objects to resist being changed D = density M= mass V= volume The force that resists stretching To calculate the average speed the equation is
Total distance/total time = average speed
50meter/25seconds= 2 meters per second per second Position is the placement of
an object in relation to another object The force that pushes matter in an object closer together so that the object has the same amount of mass, but a larger volume Newton's Laws The force of attraction that objects with mass have towards each other. F ≈ 9.8*mass Remember you can measure force by measuring F=ma Is the force that resists motion weight of displaced water is about 125 milliliters The volume of the cork is ≈ 15.6 cm cubed and the mass is ≈ 4.7 grams S=speed D=distance T=time 56 cm /2.19 s = 25.7 centimeters/second we found that the dominoes in our device travel a distance of 56cm in 2.19 seconds So... The boat in our device travels at a speed of ≈ 38cm per 4.5 seconds (or 8.44 cm per second) due West the mass of the boat is 36.9 grams formula for acceleration : Final v - Initial v / Time Time: .9 seconds Inital v =0 Final V: ≈ 11.7 ft per second v = velocity 4.7 / 15.6 ≈ .3 grams per cubic centimeter A force or Forces that
causes or changes the motion of an
object by touching it.
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