Question

The position function for a particular object is s = \[\Large -23t^2+65\]. Which of the following statements is true?

The initial position is 23

The initial velocity is 0

The velocity at time t = 1 is 42

None of these

Answer 1

@driftracer305 help?

Answer 2

yes i was just doing it in my notebook......wait a sec.

Answer 3

it is t^2 right?

Answer 4

\[\Large -23t^2+65\]

Answer 5

what did you get...?

Answer 6

B

Answer 7

that what i got..........but m not fully confident thou

Answer 8

I'll tell you what I get

Answer 9

the initial velocity is zero

Answer 10

yea m thinking as well for b..........jus giv it a try

Answer 11

\[s=-23t ^{2}+65\]
The instantaneous velocity is ds/dt.
\[Instantaneous\ velocity=\frac{ds}{dt}=-46t\]
When t = 0 the instantaneous velocity is zero.

Answer 12

Thanks

Answer 13

@kropot72 Mind ot help with anything else?

Answer 14

You're welcome :) Sorry, I have to log out now.