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What is the coordinate plane?
 How is it named? What are the points?
a plane that has two axes
Y versus X
(x,y)

__ do not give you lines. Why not?
Spatial plots.
If a point object moves at any time, its a point object. As you move it, it represents a change in y

If you have a straight line in Y v. T graph, what does that mean?
the object is standing still

What does dimensional analysis focus on?
the ratio of length versus time, but not the actual units

A horizontal line indicates a slope of __. Why?

An axis of time enables __.
study of the rate

When calculating slope, what must we do?
draw a triangle, assign opposite, adjacent, and hypotenuse, and use trig to get it

What is slope?
the ratio of rise over run, which also denotes the change in speed

What does a straight line indicate?
there is no change in rate/ speed. Slope is zero

What is the slope of the slope called?
the accepleration (slope of the speed)

If moving at aconstant speed, what does that mean for acceleration?
there is no change in acceleration

If you have a change in speed, you have __
acceleration

What is velocity?
the speed of something

Length/ Time is what?
speed (aka: rate)

Speed/ Time (L/T2) is what?
acceleration

__ has no special units
velocity

The rate at which acceleration is changing is __
(L/T2) (1/T)

If I drop a marker from my eye level to the floor, how will the line look? Why?
What is changing?
the position of the object and the time are changing. Both are increasing. A change means it is not a horizontal line. It can't be a slanted line because that indicates consistency in slope with an initial speed when our speed is zero. It would be a curve upward with the slope increasing (speed increasing)

What is acceleration?
a change in speed per time
slope in velocity versus time

What does a decreasing acceleration mean?
you're still accelerating but easing up on the gas

To go from L v. T to V. versus T., what must you do?
draw a tangent to the curve, get slope at T1 plot on V/T and repeat

If the VT graph has a slope, what does that mean?
V must be changing. It has an acceleration

What is the acceleration of gravity?
9.8 /s2 (g=gravity)
32 f/s2

Since acceleration is constant, it is __, which is why we don't do what?
not changing
take the rate of acceleration. Most of the time, acceleration doesn't change with time

How can you tell the difference between 1D and 2D?
2D problems have two distances. You need to have two dimensions to draw an arc. With/ a straight line, it is always one dimensional.
With 2D, you need both x and y. With 1D, you need x or y. With 2D, you need three axes: x, y, and T

With Y versus T, a horizontal line tells us __.
With Y versus X, a horizontal line tells us __.
its changing
nothing. We don't know how

A rate graph is what?
velocity versus time. So a zero slope equals no movement

What does a changing velocity tell us?
that there is acceleration

If you drop a ball, can it go higher than when you started? Why or why not?
No, because the ball deforms, pushing out air, and losing energy in the form of heat

If you want the ball to go higher, what do you do?
throw it

If an object is falling, what kind of motion is it?
straight line motion

