Question

An object is shot vertically upward from the ground with an initial velocity of
224 ft/sec.


(a) At what rate is the velocity decreasing? Give units.

Answer 1

this is a physics question :) as such, the answer is information you should know

Answer 2

hint: what goes up must come down

Answer 3

so -224

Answer 4

no, what force makes an object come down
?

Answer 5

i haven't taken physics yet; this is first semester calculus..

Answer 6

oh that is rude for them not to give you information on this then

Answer 7

ok, what force did an apple falling out of a tree get discovered by?

Answer 8

ummm idk gravity..?

Answer 9

yep

Answer 10

so, gravity is an acceleration(aka rate of change for a velocity)

Answer 11

so its the 2nd derivative of the function… but they just gave me a constant to work with which would just be 0… unless i have to add some type of variable to the 224, but I'm guessing it would be a negative function as a whole since its decreasing..

Answer 12

well, there is a function but you have to use physics to get it

Answer 13

i haven't taken physics yet though :/

Answer 14

the answer is just the value of gravity, -32ft/s, but physics is how you get that, if they gave you a position function, yes, it would be the second derivative, but since they did not and you are assuming you are on earth the deceleration is just gravity

Answer 15

32 ft/s^2****

Answer 16

i got the units right but the answer was still wrong o.0

Answer 17

hmm, then I don't know, if they are assuming you are on a planet sans gravity

Answer 18

if you have another attempt try 0, then argue in class about it

Answer 19

okay thank you! let me see, hang on

Answer 20

okee dokey

Answer 21

yeah it was wrong.. idk :/ thanks though! :)

Answer 22

hmm... well I vote the question is missing info

Answer 23

did you try negative 32 or positive