Motion Quiz Flashcards
in a velocity-time graph, what motion is being demonstrated if the line resides above the 0 axis
forward motion
in a velocity-time graph, what motion is being demonstrated if the line resides below the 0 axis
backwards motion
in a velocity-time graph, what motion is being demonstrated if the line resides at the 0 axis
no movement
what is the form of scientific notation and what do the variables represent
n x 10^a where n represents any integer between 1 and 10 and a represents however many times you moved the decimal to the left or right to translate the original number to a number suited for n
what do you need to do in order to add or subtract in scientific notation
you have to make sure that the exponents are the same
what does E mean in scientific notation
10
what is uniform motion
when an object is travelling at a constant rate of motion
what are the two types of graphs that can be used to represent uniform motion
distance-time and speed-time
what does the slope of a distance-time graph show
the speed of an object
what does uniform motion look like in a distance-time graph
a straight upward line to the right
what does uniform motion look line a speed-time graph
straight horizontal line
how can you determine the distance travelled in a speed-time graph
by calculating the area under the line of the graph
what does velocity describe
both the rate of motion and the direction of an object
how do you know the variable represents velocity and not speed
you put an arrow on top of the v
what is a scalar quantity
quantity that describes magnitude or size
whats a vector quantity
quantity that describes magnitude and direction
how are all vector quantities written
with an arrow above the symbol for the measured quantity
what is displacement
the change in position of an object from a reference point
what is distance
total length travelled between the start and endpoint
what is average velocity
uniform motion that involves changing a position in a specified time
what two types of graphs can be used to visualize average velocity
position-time and velocity-time
what is acceleration
change in velocity during a specific time interval
when does positive acceleration occur
when both the change in magnitude and the direction of a velocity are positive
when does negative acceleration occur
when the change in the magnitude of the velocity Is negative while the direction is positive
what is the line of best fit for an object travelling in uniform motion look like
straight
what does the line of best fit look like for accelerated motion
smooth curve
how do you write the direction
in square brackets beside the magnitude
what is the typical motion pattern of an object
an s curve on a position-time graph
how do you round when adding or subtracting
round off the answer to the least number of decimal places found in the question
how do you round when adding or subtracting more than one size of unit
covert all of the values to the largest unit, then add or subtract, then round to the least number of decimal places found in the question
what happens when you convert a number to a smaller unit
you get a bigger number
what happens when you convert a number to a bigger unit
you get a smaller number
how do you do unit conversions on the periodic table chart
if you move up on the chart, move decimal to the left, if you move down on the chart move the decimal to the right
how do you change units using fractions
multiply by a series of factors so that the units you do not want will cancel out and the units you want will remain
