Asked by Kai
I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly.
0 - (h/5) = -1.1(v0) - (1/2)(-9.8)(1.1)^2
(v0)^2 = 2(-9.8)(h/5 - h)
My final answer was h = 412.90 to two significant figures so that's: 4.1 * 10^2
But MasteringPhysics says its incorrect. What's the real answer? And what am I doing wrong?
0 - (h/5) = -1.1(v0) - (1/2)(-9.8)(1.1)^2
(v0)^2 = 2(-9.8)(h/5 - h)
My final answer was h = 412.90 to two significant figures so that's: 4.1 * 10^2
But MasteringPhysics says its incorrect. What's the real answer? And what am I doing wrong?
Answers
Answered by
bobpursley
I can't tell, but I suspect you have signs all messued up.
Down is -, + is up. In the first equation, is vo down orup? why is the sign before 1/2 -, then another - before 9.8. I can't help more than this, but is suspect it is signs in the first and second equation.
Down is -, + is up. In the first equation, is vo down orup? why is the sign before 1/2 -, then another - before 9.8. I can't help more than this, but is suspect it is signs in the first and second equation.
There are no AI answers yet. The ability to request AI answers is coming soon!