XtremePapers

yeah its 3 marks. i think it was total power. hey btw what did you write for the last part of the waves question. i couldnt do it

5ms is 1/4 of period. So phase difference is 90 degrees. Its a straight wave

damn! thats right! uff i hate waves. btw what do your curves for the force/time one look like??

acceleration/time, same shape with force/time
(change in) momentum/time, straight line from origin to (2.0s, 17 Ns), then vertival line reach zero, then straight line along x-axis....concept: gradient = force

not sure though...

im really gonna bang my head if I got wrong for the question about power...its that easy

haha! but seriously your working seems right! dw you'll do fine! i got the same curve too!

a lot of people didnt have time to finish! for the moments question, what was your mass?? could you finish the rest?

Sorry for the late reply. Concept is W=mg, m=19/9.81
If its not troublesome can u help me confirm with other about the power question?

its okay, and sorry, i solved for total power