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Flashcards in Mechanics Deck (17):
1

!a!

magnitude of force

sqrrt i^2 + j^2

2

^a (hat on top of a)

1/!a!

1 over magnitude of force

1/ sqrrt i^2 + j^2

3

q = (3i +4j) ^q =

sqrrt 3^2 + 4^2 =5

1/5q = (0.6i +0.8j)

4

distance

is the overall distance travelled

5

displacement

is the displacement from STARTING POINT only

6

Vector

magnitude +direction

7

Scalar

magnitude

8

examples of Vector

Displacement, velocity, acceleration

9

examples of scalar

distance, speed

10

velocity=

displacement/tota time

11

velocity time graph
area

displacement

12

velocity time graph
gradient

acceleration

13

displacement time graph
gradient

velocity

14

acceleration time graph
area

velocity

15

dsplacement time graoh
to find velocity

final displacement/ time

16

displacement time graph
speed

add up thespeed for each part, divide by all parts

17

how to find speed with vectors

i^2 + j^2 =sped^2