Recent content by Lil Uzi Vert

(In the post i meant 30% loss, not 20 % that's why i did multiplying by 0.7.) I divided by two so the number is 49 J , multiplying it by 0.7 would be 34.3 J 34.3 J / 1.225 = h H= 28 M exactly Is this method now correct?

i meant 30%

Homework Statement A 125 - G arrow is shot vertically upwards with a Vi of 28/ms. Assuming a 20% loss in Mechanical Energy while ascending, what maximum height above the position it was shot does it reach? Homework Equations Vi= 28m/s Vf= O m/s D= ? a= -9.8 m/s Vf^2= Vi^2 + 2aD Eg = mgh Ek =...

Thanks, this really clarified it for me.

I am having trouble with these two equations because I do not know how to create them into what the question is looking for. Can I have a hint?

Thanks, it is nice to meet you. :smile:

Homework Statement A person performs 6.1 J of work to lift an object without acceleration to a particular height on Earth. Write an equation describing that energy change and analyze it to determine how different the energy would be required to lift the same object to the same height on the...

Hey guys, I'm new to this forum and I've mainly joined because I like physics but I also have trouble with some harder questions. It is nice to meet you all.