Physical Science Class Notes (1-23-2018)
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Pg. 24
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#1A = TriangleV / T
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#2Indicates Change in velocity
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#3Averae acceleration refers to acceleration over time
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#4Objects velocity is increasing slowly
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#5Objects velocity is decreasing
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#6Object velocity is slowing down slowly
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Pg. 25
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#10.007 m/s^2
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#24.5 M/S^2
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#3Take approximately 3 more seconds
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Pg. 27
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#1Time
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#2Speed
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#3Speed changes at the same rate. Shown as straight line
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#4Acceleration
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#5Speeding up
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#6
Goes from linear to a slightly curved graph. This is due to object not staying constant.
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#7Table
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00
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207
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405
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605
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805
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1000
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1200
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See board for graphing example
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#8Three times = 0-7, 40-80,100-120
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#9
-10 m/s to steady for 5 seconds at 10 seconds accelerates at 10m/s for 10 seconds
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Pg. 29
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#1Velocity will accelerate, When velocity is less than zero it will decrease.
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#2Acceleration is 0
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#3
Acceleration is a change in velocity. If the velocity stays the same then there is no increase.
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#4Moving man will move right.
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#5Moving man will move left
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Pg. 30 See board
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SKipPg. 31-68
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Pg. 71
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#1
Action Force is the force by the object that is exerting force on the second object.
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#2The reactionary force is the force exerted by the secondary object.
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#3For every action there is a equal and opposite action
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#4A. (See diagram on board)
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B. The chair
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C. The chair would break
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#72
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#5See diagram " Action Force" is going left to right.
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#6The swimmer pushes the water backwards.
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#7
The Earth's acceleration is less than the ball because the earth's mass is much greater.
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Pg. 73
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#1P = mv
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#2Direction is determined by the velocity used in the equation.
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#3SI unit of moment is kilograms times meters per second
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#40
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#5If mass increases then momentem increases
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#6If velocity increases momentum increases
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#7
When an object changes it motion using force, this force is changing the momentum
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Pg. 74
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#1zero, because it is at a stop
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#283750
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#3The bug experienced the greatest change in speed
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Pg. 76Materials: Balloon, cardboard, wheels, tape, play dough, straws, hot glue,
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Pgs. 77-79
talked about it when doing the lab
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Pg. 81
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#1Momentum is always conserved, but energy does transfer between objects.
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#2The objects bounce off each other.
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#3-#5Responses will vary
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Pg.82
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#1P = MV ( 1000 kg * 11 m/s = 11,000 kg m/s
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#2Come back later
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#3Come back later
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#84
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#1Two arrows going different ways showing action vs reaction force
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#2bumper car needs less friction so it can move more effortlessly
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#3Newtons first law
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#41,000 Newtons
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#5Responses will vary, but overall you need to know the weight of the driver.
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#6reduced by 4 times.
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#74 m/s
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#8
According to the law of the concervation of momentum the total amount of momentum is conserved in an isolated system.
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Pg. 86
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#1We talked about the different forces.
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#2219 Newtons
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#3Write any story you want as long as it matches the graph.
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#4Your body continues forward due to inertia.
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#54.77 m/s
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#67.43 newtons
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#7.73 m/s
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