Recent content by cire792

Ahh! t = 2.6 Well that makes more sense. Don't know how I messed that up before. ~_~ oh, vi = 13.46

Sy = vi(t) + 1/2 (a)(t)^2 -35 = 0(t) + (-4.9) (t)^2 t = 0.84s And because x is uniform, v=s/t v=5/0.84 v=5.95m/s So, that would be the X-component. But since it's horizontal at the start, Vi = 5.95m/s [E] So problem solved. Thanks a lot!

Yes, does that then change initial velocity to 0? Well that can't be right, at the point they jump off its 0, so then I can just figure out the time with Sy = vi(t) + 1/2 (a)(t)^2 Which equals 0.84s. I don't understand how I'd continue with that.

[SOLVED] Horizontal ProjectileMotion Homework Statement Divers jump off a cliff, at a height of 35m above sealevel. To land safely, they aim for 5m from the base of the cliff. What push off speed is neccesary? Sy= -35m Sx= 5 ay= -9.8m/s/s Vi = ? Homework Equations Not sure how to...

Homework Statement Canon fired at 45Degrees, at 300m/s Assuming no air resistance, a= -9.8m/s^2 ViX = 300cos45 = 212m/s ViY = 300sin45 - 212m/s Displacement = 2293m [used vf^2=vi^2+2a(d)] rearranged for d, and vf=0, at highest peak. Time the ball is in the air= ? Homework...

I do not recall the, "multiply every element of the expression" but that definitely clears up my question, and will be great to know for the rest of the year Thanks a lot kbaumen!

Yeah that makes a lot more sense now One thing I don't understtand is when you moved the 2, over to the S, why did a 2 go to the initial velocity as well? i don't remember anything liike that in algebra (sorry for not writing in Latex, looks complicated lol)

Thanks for the welcome! I'm still a little confused, I've sort of convinced myself that -6.4 is my g/a, and yes it is experimental error. You sort of lost me after the actual time explanation tho, i don't think that's relavent for this lab tho I think my only question that i need answered is...

Homework Statement Acceleration due to Graivty, dropping object 1 from recorded height for recorded time Δd = -2.36 (falling object) Δt = 0.86s vi = 0 (start from rest) a = ? Δd = Vi(Δt) + ½ a (Δt)^2 Homework Equations I think I could use this equation, but I'm not sure what Vf...