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How do you create a graph of data collected in class?
Label the graph with the variables of the experiment and plot the data.
How do you know if an object is moving?
If the object's distance from the starting point changes.
Define acceleration.
the rate at which velocity changes
Define force and list the types of forces that can act on an object.
force= a push or a pull
-friction
-gravity
-air resistance
-unbalanced
-action
-reaction
-balanced
Define a wave and give examples of real-world waves.
wave= a disturbance that transfers energy from place to place
-sound
-ocean
-string
How do you determine the slope of a line?
Calculate the rate of change.
What scientific units can be used to measure position?
meters/centimeters
How can the acceleration of an object be determined?
a= v2-v1/t
Give an example of a real situation in which:
a. Newton's 1st Law applies
b. Newton's 2nd Law applies
c. Newton's 3rd Law applies
a. When a force pulled on cloth with a glass on top, the cloth moved but the glass remained at rest because the force was only applied to the cloth.
b. As the rocket accelerates, it loses fuel and mass, causing the rocket to accelerate faster without the mass of the fuel.
c. When someone hits another person, for the force applied to the person's arm, there is an equal force applied to the person's hand.
Define transverse waves.
transverse waves=waves that moves the medium at a right angle to the direction in which the waves are traveling
-perpendicular to each other T
What is a crest?
crest=highest part of wave
Why is a graph of position versus time helpful in analyzing motion?
In a graph of position, you can measure the distance from a starting point.
Define energy and list the different types of energy there are.
energy= the ability to do work or cause change
-kinetic
-potential
-thermal
-chemical
-electrical
-electromagnetic
-nuclear
-elastic potential
-gravitational potential
What is the formula of Newton's 2nd Law?
a=f/m or f=ma
Define longitudinal waves.
longitudinal waves= move the particles of the medium parallel to the direction in which the waves are traveling L
What is a trough?
trough= lowest part of wave
What is the difference between speed and velocity?
Speed= the distance an object travels per unit of time (m/s)
Velocity= speed in a given direction (m/s)
Give an example of energy being transferred or transformed.
Energy is transferred when a bowling ball hits the pins and the pins move.
Energy is transformed when a ball rolls a hill and the potential energy turns into kinetic.
How do you calculate the weight of an object if you know its mass?
w=mg
Explain how you determine the frequency of a wave.
One must count the number of complete waves in a given amount of time.
What are some formulas for energy?
GPE=mgh
KE=1/2mv^2
How can you determine the velocity of an object?
By finding the speed and direction its moving- speed (d/t) + direction
Calculate the amount of thermal energy gained when 200g of water is heated from 25 degrees Celsius to 95 degrees Celsius.
58,520 J
Why doesn't the Earth fall up toward a rock when it is dropped?
The Earth does fall up toward the rock, it just moves slower than the rock.
How do you find the amplitude of transverse and longitudinal waves?
transverse= measure the distance from the rest position to a crest or trough
longitudinal= measure the compressions in the wave