wait wtf
1) the first question i got like 6.8 for the velocity and 335kg for the mass lol what did i do wrong
i did momentum a + momentum b = momentum of particle -> 3(6) + 2(8) = 5(v) v = 6.8m/s
then the second part i done momentum particle = 5+m(0.1) -> 5(6.8) = 0.5 + 0.1m -> m = 335kg
5) how did u wiork out max height of connected particle? is that when v=0?
7) i got 12.3m/s for the speed. i used horizontal displacement formula -> v=d/t and re-arragned to get in terms of t(since t is same for horizontal and vertical_, i ended up with like 16.6m = ucos50 * t -> u(speed) = 16.6/tcos50 and subbed that into s=ut+1/2at^2 to work out what the time was
then used that time in 16.6m = ucos50 * t to get u = 12.3
8) i got t=5 and t=25 but i thought time isnt a vector so i minused them and used that in the equation i ended up with like 138m or 132m, something like that
how many marks would i have lost on the 10 marker, 7 marker if my answer is wrong?