# AP Physics free response help

## The Attempt at a Solution

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arildno
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1. You must state the problem
Yes, that means posting the problem here. At Pf.

2. You must show your own work.

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its the first question

the second link works i think

can you try it and let me know if i should type it

arildno
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Okay second link works, so what have you done so far?

are you still there

arildno
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Indeed, what have you done so far?

i did a) and got 500 kg

daniel_i_l
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This isn't a chat room, it takes a few minutes before you get responses.

on b i am trying to integrate and got x=(8/5)ln{1+5t}

i really do not think that is correct though

arildno
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on a)+b), you are correct.

arildno
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i really do not think that is correct though

But it is.

is integration the wrong method?

oh ok thank you, I am having trouble with c and d though

arildno
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is integration the wrong method?

Eeh, do you even take time to read the replies you get??

Slow down a bit, will you?

what is the best method to use

arildno
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oh ok thank you, I am having trouble with c and d though

Ok, now, is there some other quantity you can calculate by means of which you can calculate the force acting upon the object?

I'm sorry i think my computer is on delay because the messages dont come up until after i send something else

mass times acceleration?

arildno
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mass times acceleration?

Agreed!

So, how can you find acceleration? (you already know mass)

hdhdkshhfsdhkf

dv/dt? could that be used?

use
Fnet=ma

arildno
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dv/dt? could that be used?
Sure!
Isn't that what acceleration is, after all?

hjkshdgytu

sorry for the random letters your responses dont come up on my comp otherwise

wait so would dv/dt just be 8/(1+5t)

hsjsysgdsd

arildno