Motion and energy

Question 1

Reference point

Answer 1

a place or object used for comparison to determine if something is in motion

Question 2

Motion

Answer 2

an object whose distance is changing from another object

Question 3

An object is in motion if it changes position relative to a…

Answer 3

reference point

Question 4

Once selecting your reference point, indicate a change in position by…

Answer 4

using a + or - sign

Question 5

Signs stand for any pair of opposing directions from reference point like…

Answer 5

Right, left, up, down, away, toward, front, or behind

Question 6

Distance

Answer 6

the length of a path between two points

Question 7

Displacement

Answer 7

the length and direction that an object has moved from its starting point

Question 8

Distance is the total length of the actual path between…

Answer 8

two points

Question 9

Displacement is the length and direction of a straight line between…

Answer 9

starting and ending points

Question 10

Vector

Answer 10

a quantity that consists of both magnitude and a direction

Question 11

Displacement is a vector while distance is…

Answer 11

not

Question 12

graphically shown by an arrow, the length represent the vector’s _______ and the direction of the arrow indicates the ______ of a vector.

Answer 12

magnitude; direction

Question 13

speed

Answer 13

the distance an object travels per unit of time

Question 14

What equation is used to calculate the speed of an object?

Answer 14

speed = distance/time

Question 15

instantaneous speed

Answer 15

the rate at which an object is moving at a given instant in time

Question 16

velocity

Answer 16

the speed in a given direction

Question 17

changes in velocity may be due to changes in…

Answer 17

speed, direction, or both

Question 18

slope

Answer 18

the steepness of a line on a graph

Question 19

the slope of a distance-versus time graph represents speed, that is, the rate that _____ changes in relation to _______

Answer 19

distance; time

Question 20

What formula is used to calculate slope?

Answer 20

slope = rise/run

Question 21

acceleration

Answer 21

the process of speeding up + the rate at which velocity changes with time

Question 22

a change in velocity can involcave a change in either _____ or _______

Answer 22

speed; direction

Question 23

in science, acceleration refers to ______/_______ speed or changing ______

Answer 23

increasing; decreasing; direction

Question 24

like displacement and velocity, acceleration is a _________ with ______ and _______

Answer 24

vector; magnitude; direction

Question 25

When an objects speed _______ or _____ ________, the object accelerates

Answer 25

increases; stays constant

Question 26

Decreasing speed is called ________ or ______ ________

Answer 26

deceleration; negative acceleration

Question 27

What is the equation of the acceleration of an object?

Answer 27

(Final velocity - initial velocity)/time

Question 28

you can use both a ______-versus-time graph and a ________-versus time graph to analyze the ______ of an accelerating object

Answer 28

speed; distance; motion

Question 29

work

Answer 29

when an object is caused to move a certain distance

Question 30

energy

Answer 30

the ability to make things move/work or change

Question 31

kinetic energy

Answer 31

the energy an object has due to its motion

Question 32

the kinetic energy of an object depends on both its ____ and ______

Answer 32

mass; speed

Question 33

what is the equation for kinetic energy?

Answer 33

1/2 * mass * speed^2

Question 34

potential energy

Answer 34

a type of energy that has the potential to do work and is stored energy that results from the position or shape of an object

Question 35

gravitational potential energy

Answer 35

potential energy related to an object's height

Question 36

What is the equation for gravitational potential energy?

Answer 36

weight * height

Question 37

elastic potential energy

Answer 37

the potential energy of objects that can be stretched or compressed

Question 38

mechanical energy

Answer 38

an objects combined kinetic energy and potential energy

Question 39

What is the equation for mechanical energy?

Answer 39

mechanical energy = kinetic energy + potential energy

Question 40

the most common energy transformation is between what two types of energy?

Answer 40

potential and kinetic energy

Question 41

any object that rises or falls experiences what to changes in energy?

Answer 41

kinetic and gravitational potential energy

Question 42

law of conservation of energy

Answer 42

a law that states that when one form of energy is transformed to another, no energy is destroyed is the process

Question 43

The total amount of energy is _______ before and after any transformation

Answer 43

same

Question 44

adding up all the new forms of energy after a ________ will mean that all of the _________ energy will be accounted for

Answer 44

transformation; original