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Flashcards in Test 1 Review Deck (24):
1

What is kinematic the study of?

The study of motion

2

Describe motion

A change in an objects position as measured by a particular observer

3

Describe distance

The total length of the path travelled by an object in motion

4

Describe direction

The line an object moves along from a particular starting point

5

Describe scalar and give an example

A quantity that has only magnitude. Distance is an example (50m)

6

Describe vector and give an example

A quantity that has magnitude and direction. Distance and displacement are examples. (50mW)

7

Describe position

The distance and direction of an object from a reference point

8

Describe displacement

The change in position of an object.

9

What is a vector scale diagram

A vector diagram is drawn to scale. The vectors have a beginning and an end. They are used to represent total displacement(and other things) visually.

10

Displacement can be calculated by using:

D= df+di

11

What are the three rules for sigfig zeroes?

1) all non series are significant
2) all zeroes between sigfigs are significant
3) all zeroes which are both to the right of the decimal point and to the right of all significant digits are themselves significant

12

Describe average speed

The total distance travelled divided by the total time taken to travel that distance

13

What is the formula for average speed?

V=d/t

14

What is the formula for average velocity

V=d/t

15

What does the slope of a position time graph give?

Gives the velocity of an object

16

When calculating average speed/velocity what needs to be changed with the given?

Minutes to seconds
Km to meters

17

What is acceleration?

A change in velocity

18

What does a velocity time graph describe?

The motion of an object. Uniform acceleration or velocity result in straight line graphs

19

What is the slope of a line in a velocity time graph

Average acceleration

20

What is instantaneous velocity?

The velocity of a specific instant in time where average velocity is over a period of time

21

How is instantaneous velocity found?

By the tangent on a curve on a position time graph

22

How can change in velocity be found?

By finding the area under acceleration time graphs

23

In an acceleration time graph what does uniform acceleration result in?

A horizontal line

24

What is the value of gravity?

9.8 m/s2- exponent