Linear Motion, Unit Conversion, Falling Bodies, Graphical Representation

Question 1

What variable is used for distance?

Answer 1

y (or x) (could be both at this point actually)

Question 2

What variable is used for initial velocity?

Answer 2

v0

Question 3

What variable is used for final velocity?

Answer 3

v

Question 4

Equation to find velocity (the baby one):

Answer 4

v = x/t

Question 5

How fast can Olympic sprinter run?

Answer 5

10m/s

Question 6

What variable is used for constant acceleration?

Answer 6

a

Question 7

Constant Acceleration Equation:

Answer 7

a = (v - v0)/t

Question 8

How to find velocity w/ linear problem?

Answer 8

v = v0 + at

Question 9

Constant Velocity Equation:

Question 10

Average Velocity Equation:

Answer 10

Average v = (v + v0)/2
Can only be used when there is constant acceleration

Question 11

Velocity Equation (the baby one):

Answer 11

v = x/t

Question 12

Finding Velocity w/ distance equation:

Answer 12

v2 = v02 + 2ay

Question 13

Finding Distance w/ velocity, time & acceleration equation:

Answer 13

x = v0 + 1/2at2

Question 14

What units of measurement are used for distance?

Answer 14

meters (m) or kilometers (km)

Question 15

What units of measurement are used for time?

Answer 15

seconds (s) or hours (hr)

Question 16

What units of measurement are used for velocity?

Answer 16

meters per second (m/s) or kilometers per hour (km/h)

Question 17

What units of measurement are used for acceleration?

Answer 17

meters per second squared (m/s2) or kilometers per hour squared (km/h2)

Question 18

Without air resistance, all objects -

Answer 18

fall with the same acceleration

Question 19

Heavier object falls fall faster (T/F)

Answer 19

False!

Question 20

What is the acceleration due to gravity?

Answer 20

g = 9.8m/s2 (Down)

Question 21

what does the variable g represent?

Answer 21

g is for gravity
(its a type of acceleration)

Question 22

What is the free fall equation?

Answer 22

y = 1/2at2
(When initial velocity is 0 and there is no air resistance)

Question 23

How to find velocity?

Answer 23

V = Vo + at

Question 24

How to find velocity in terms of distance?

Answer 24

V2 = Vo2 + 2ay
(y is distance here)

Question 25

At a constant velocity, what does a distance over time graph look like? What does the slope represent?

Answer 25

It's linear and the slope represents the velocity of the object.

Question 26

At a constant velocity what does a velocity over time graph look like? What does the line represent?

Answer 26

The graph should like a horizontal line with no slope. This is because the line represents acceleration, and because there is constant velocity, the speed doesn't change so the acceleration and slope of the line is 0.

Question 27

At a constant velocity, what does the area in a velocity over time graph mean?

Answer 27

Calculating for the area between times in this type of graph can give you the distance traveled by the object at that time.

Question 28

At a constant acceleration in a distance over time graph what does the graph look like? Why? What does the slope mean?

Answer 28

At a constant acceleration distance over time graph the graph is shaped like a parabola because the velocity is increasing and therefore it is traveling a greater distance each second. The slope at a chosen point in the parabola represents the velocity of the object in that moment of time.

Question 29

At a constant acceleration what does a velocity over time graph look like? Why? What does the slope represent? What does the area represent?

Answer 29

A constant acceleration velocity over time graph is a linear graph because the object is increasing it's speed consistently over time. The slope represents the acceleration rate of the object and calculating of the area between time can give you the distance traveled between the different times.

Question 30

What does this Δ mean?

Answer 30

That's delta. It basically means change.

Question 31

At a constant acceleration what does a acceleration over time graph look like? Why? What does the area represent?

Answer 31

At a constant acceleration, an acceleration over time graph looks like a horizontal line. It has no slope because the acceleration is not changing over time. The area of this graph represent the change in velocity between two different times.

Question 32

What is displacement?

Answer 32

The change in placement of an object after some time