formulas from chapter 3

Question 1

displacement

Answer 1

displacement(delta x) = final position - initial position

Question 2

means “change in”

Answer 2

delta

Question 3

pythagorean theorem

Answer 3

axa + bxb = cxc

Question 4

speed

Answer 4

speed= distance/ time

(The / means over or divided by )

Question 5

velocity

Answer 5

v= displacement / time

Question 6

acceleration

Answer 6

a= final velocity - initial velocity divided by time

Question 7

what is the unit of force

Answer 7

newton

Question 8

what is weight measured in

Answer 8

force

Question 9

force/ second law of motion

Answer 9

F = ma

or force = mass x acceleration

Question 10

newton

Answer 10

kgm/s(second) squared

Question 11

kgm squared over second squared

Answer 11

joule

Question 12

g ( force of gravity on an object)

Answer 12

g= 9.81 m/s squared

Question 13

weight

Answer 13

Force of weight = mass x g (9.81 m/s squared )

Question 14

law of universal gravitation

Answer 14

Force = G x mass of object 1 x mass of object 2 over distance squared

Question 15

distance

Answer 15

d= 1/2 (acceleration of gravity) (time) squared

d= 1/2 gt squared

Question 16

AMA

Answer 16

output force / input force

Question 17

momentum

Answer 17

mass x velocity

Question 18

IMA

Answer 18

input distance/ output distance

Question 19

efficiency

Answer 19

work output/ work input

Question 20

power

Answer 20

work / time

Question 21

friction force

Answer 21

coefficient of friction x weight

Question 22

work

Answer 22

force x distance