Physical Science Review
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Transcript of Physical Science Review
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Physical Science Reviewleah is awesome and so is tamara fav
students ever and brendan too
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1001. Speed with direction is called ________.
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Answer1. Speed with direction is called ________.
Velocity
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3002. Lance Armstrong’s teammate, George Hincapie, averaged a speed of 33.6 km/hr in the 15th stage of the Tour de France, which took 4.00 hours. How far (in kilometers) did he travel?
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Answer2. Lance Armstrong’s teammate, George Hincapie, averaged a speed of 33.6 km/hr in the 15th stage of the Tour de France, which took 4.00 hours. How far (in kilometers) did he travel?
134 km
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300How are the variables speed and velocity different?
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AnswerHow are the variables speed and velocity different?
Velocity can be negative, it is speed with direction.
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200Write a + or - next to the directions which are positive and negative respectively.
a. upb. leftc. east
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AnswerWrite a + or - next to the directions which are positive and negative respectively.
a. upb. leftc. east
+-+
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100This is the rate at which velocity changes
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AnswerThis is the rate at which velocity changes
acceleration
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300This is the value of the acceleration due to gravity
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AnswerThis is the value of the acceleration due to gravity
9.8 m/s2
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300Why is the position vs time graph for an object in freefall a curve?
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AnswerWhy is the position vs time graph for an object in freefall a curve?
gravity is acting on the object causing it to accelerate, and objects which are accelerating show up as a curve on a position vs time graph.
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200If you walk 8 blocks north from your house and then 3 blocks south how far did you walk? What is your position relative to your house?
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AnswerIf you walk 8 blocks north from your house and then 3 blocks south how far did you walk? What is your position relative to your house?
you walked 11 blocks, you are 5 blocks north of your house.
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200You know time and speed. What is the equation for finding distance?
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AnswerYou know time and speed. What is the equation for finding distance?
d = t * vOther ways to write this equation:t = d/vv = d/tYou need to know how to use all 3 for the test.
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100What is the equation for finding acceleration?
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AnswerWhat is the equation for finding acceleration?
acceleration = (vfinal - vinitial)/time
Also know how to find slope of a line.
slope = (Y2 - Y1)/(X2 - X1)
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300A high-speed train travels at 300 km/h. How long (in hours) would it take the train to travel 1,500 km at that speed?
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AnswerA high-speed train travels at 300 km/h. How long (in hours) would it take the train to travel 1,500 km at that speed?
5 hours
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300It takes a garbage truck 10 seconds to go from 0 to 25 m/s. What is its acceleration?
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AnswerIt takes a garbage truck 10 seconds to go from 0 to 25 m/s. What is its acceleration?
2.5 m/s2
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300During what time is the object moving at a constant speed?
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AnswerDuring what time is the object moving at a constant speed?
10-15 seconds
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300What is the object’s acceleration from 15 to 40 seconds?
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AnswerWhat is the object’s acceleration from 15 to 40 seconds?
-4 m/min2
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200A variable that is described using both a number and a direction is called this.
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AnswerA variable that is described using both a number and a direction is called this.
vector
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200If ramp A is steeper than ramp B what affect will it have on a car traveling down the ramp’s acceleration?
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AnswerIf ramp A is steeper than ramp B what affect will it have on a car traveling down the ramp’s acceleration?
the acceleration of the car on the steeper ramp will be greater.
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200A snail travels 200 cm in 1 hr calculate the snails speed in cm/hr.
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AnswerA snail travels 200 cm in 1 hr calculate the snails speed in cm/hr.
200 cm/hr