Motion and Kinematics in One Direction

Question 0

Where do objects that are turning accelerate towards?

Answer 0

The center of the turn

Question 1

What are the types of motion?

Answer 1

1. Not moving
2. Moving with constant speed
3. Moving with constant velocity
4. Acceleration

Question 2

What ways can one describe motion?

Answer 2

1. Tell someone through words
2. Graph motion
3. Write an equation of motion
4. Draw a diagram of motion

Question 3

What does x represent? What is its unit?

Answer 3

X represents change in position and is measured in meters

Question 4

What are the symbols for the final position of an object?

Answer 4

Xf, X2, or X

Question 5

What are the symbols for the initial position of an object?

Answer 5

Xi, X1, or X0

Question 6

What is the equation of displacement?

Answer 6

Xf-xi

Question 7

What are the symbols for final time?

Answer 7

Tf, t2, t

Question 8

What are the symbols for initial time?

Answer 8

To, t1, t0

Question 9

What is the equation for time interval?

Answer 9

Tf-ti

*Time is never negative!

Question 10

What is the unit of average velocity?

Answer 10

M/s with a DIRECTION

Question 11

What is the difference between distance as displacement? Speed and velocity?

Answer 11

Magnitude vs. direction and magnitude

Question 12

What is the equation for average velocity?

Answer 12

(Change in x)/(change in t)

Question 13

Why can only AVERAGE velocity be determined?

Answer 13

Don’t know if velocity is constant– could slow down then speed up

Question 14

Define instantaneous velocity.

Answer 14

Velocity at a certain time

Question 15

What is the unit for time?

Answer 15

Seconds

Question 16

How do you find instantaneous velocity?

Answer 16

Find the slope of a tangent on a position vs. time graph

Question 17

Vector vs. scalar

Answer 17

Vector- magnitude and direction

Scalar- magnitude

Question 18

What is the acceleration due to gravity?

Answer 18

-9.8 m/s^2

Question 19

What is position?

Answer 19

Where an object is located in space, need reference point and vector

Question 20

What is speed?

Answer 20

• How fast you are going

- change in distance over change in time

Question 21

What is velocity?

Answer 21

• Speed and direction of an object

- Change in position over time in a certain direction

Question 22

What is displacement?

Answer 22

Change in position (size and direction)

Question 23

What is the equation for displacement?

Answer 23

Change in x= Xf-xi

Question 24

Is gravity a vector or a scalar?

Answer 24

Vector

Question 25

What's another name for force?

Answer 25

A push or pull

Question 26

Is force a vector or a scalar?

Answer 26

A vector (how great of a force and in which direction one is pushing or pulling)

Question 27

When is air resistance not applicable?

Answer 27

When there are low amounts of surface area and speed

Question 28

What is terminal velocity?

Answer 28

A constant velocity that occurs when there is so much air resistance the object doesn't accelerate anymore

Question 29

What is true about objects on earth?

Answer 29

Force/mass= 9.8 m/s^2 -9.8 m/s^2

Question 30

What is the unit of acceleration?

Answer 30

M/s/s or m/s^2

Question 31

What is the equation for average velocity?

Answer 31

Change in x (position) over change in t (time)

Question 32

What is the equation for average speed?

Answer 32

Change in d (distance) over change in t (time)

Question 33

What is the equation for average acceleration?

Answer 33

Change in v (velocity) over change in t (time)

Question 34

What is acceleration affected by?

Answer 34

Force (ex: gravity)

Question 35

What are the two effects of positive acceleration?

Answer 35

1. Speed up and move up/to the right if moving in the positive direction 2. Slow down if moving in the negative direction

Question 36

What are the two effects of negative acceleration?

Answer 36

1. Speed up and move down/to the left if moving in negative direction 2. Slow down if moving in the positive direction

Question 37

What does the slope of a velocity vs. time graph represent?

Answer 37

The average acceleration

Question 38

What does the slope of a position vs. time graph represent?

Answer 38

The average velocity