Question

On a speed time graph, what is the acceleration during the interval if the velocity changes from 250 m/s to 50 m/s in 2 s

Answer 1

-100 m/s^2 100m/s^2 250 m/s^2 50m/s^2

Answer 2

its a 200 change s:

Answer 3

in velocity at least

Answer 4

in a graph it is calculated by the slope :P

Answer 5

o.o how do you get the slope for this?

Answer 6

they don't give you points but they give you the change... and acceleration if you can recall is the change of speed over time... so do that ;)

Answer 7

so the time is 2 seconds and the change in speed is -150 soh -150/2?

Answer 8

thats -75 T_T im wrong

Answer 9

wait im an idiots thats why

Answer 10

the change is 200

Answer 11

-200/2

Answer 12

so -100

Answer 13

that is my final answer i believe

Answer 14

so -100m/s^2 is the acceleration

Answer 15

initial vel= 250 m/s
final vel= 50 m/s
times interval= 2 s
change in velocity is (Vfinal - Vinitial)

Answer 16

so (50-250)= -200

Answer 17

you were right :P lol

Answer 18

whoop i kinda was like wait 250-150 :I thats 100 and i facepalmed

Answer 19

Aha do you mind going over more I dont wanna be like a bother aha

Answer 20

go ahead :P

Answer 21

hokay aha

Answer 22

Only flat line segments on a speed time graph have zero acceleration

Answer 23

is this true?

Answer 24

well you can do this yourself by putting a bit of thinking into it...

Answer 25

let me ask you... is speed changing? on a flat line?