Question

an automobile accelerates from zero to 30m/s in 6s. The wheels have a diameter of .4m. What is the angular acceleration of each wheel?

Answer 1

\[a= \frac{\Delta v}{\Delta t}\]
\[\alpha = \frac{\Delta \omega}{\Delta t}\]
\[\omega = \frac{v}{r}\]

Answer 2

^_^

Answer 3

so 5/.4=12.5?

Answer 4

oh, I'm so sorry. It didn't tell me that you had responded :(

That looks right - remember the units though!!! ^_^

\[\frac{5 m/s^2}{.4m}=12.5 rad/s^2\]

Answer 5

ooops oooops sorry sorry

Answer 6

.4m is the diameter, and you want to use the radius = .2m

Answer 7

ah
so 5/.2= 25 rad/s^2

Answer 8

yah ^_^

Answer 9

thank you so much

Answer 10

very welcome. Holler if you need anything else ^_^