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/sci/ - Science & Math

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[ERROR] No.3762406 [Reply] [Original]

How do I finish this problem (pic related)? Not homework btw, just practice.

>> No.3762441
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[ERROR]

self bump

>> No.3762462

PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS

>> No.3762491

desperate bump

>> No.3762509

Come on, candy asses. All that bragging needs to be justified.

>> No.3762527

This is awful. You're solving for t, yet you're setting t = h/v_o.

>> No.3762539

http://www.youtube.com/watch?v=rRQijskAMp4

>> No.3762542

>>3762527
Wait, t (time) is the variable I have to solve for in order to get the location?

>> No.3762558

>>3762542
yes, you set y_up = y_down and solve for t, then put that t back into one of the equations to find your answer. this assumes you don't fuck up the signs doing it.

>> No.3762567
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[ERROR]

>>3762558
How can I solve for t when I would eventually have:

constant(t^2) = constant(t^2)

They seem like they would just cancel; this has been confusing me. Fuck...

>> No.3762579

>>3762567
because you (should) have a v_o*t in one of your equations and a -v_o*t in the other. Those don't cancel each other.

>> No.3762608

>>3762579
What is the v_0? It seems to start at rest. (I know I'm wrong, but please tell me what it is.)

>> No.3762612

>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
>>3762608
answer this, faggots

>> No.3762615

>two stones are thrown with the same speed of *** m/s

protip: they have different initial heights too.

>> No.3762618

>>3762612
see

>>3762539

>> No.3762633

You have the equation from the top:

y = 6.46 - 8.07*t - 0.5*g*t^2

Downward velocity/acceleration is negative. The rock thrown at the bottom of the cliff is:

y = 8.07*t - 0.5*g*t^2

Make the equations equal. Solve for t. Plug number back into one of the equations.

>> No.3762640
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[ERROR]

>> No.3762646

>>3762633
way to do it for him.

>> No.3762660

>>3762640
>>3762633
Wow, thanks. Sorry for being such a retard.

>> No.3762685

>>3762633
This is correct. The answer is 2.45m