MJ question (1 Viewer)

[ShaunSmith]

silly question what sort of stuff did you write, most of mine was to do with projectiles how if he jumped vertically his initial velocity would of been 12.5ms^-1 and such, also that laws of physics would make it so he couldnt stay up there gravity etc.

but how stupid was it!!

 

[Spiked_Phate]

ummm....i got his initial velocity as being like 24 ms^-1, and said that he could not achieve this....now that i think about it, yours sounds better....oh well...i dont think itl be couldnting for my uai neways

 

[jumb]

I got 0.9

damn.

 

[+GriM ReApeR+]

lol i read the question and was like...wtf?!?

 

[CrashOveride]

how can u give it a precise calculation, you only know the time. you can give a suitable range tho

i talked about just anything that i thought of, gravity holding him down, inertia, some projectile motion, newtons laws bah

 

[bevstarrunner]

I got that he could jump about 7 metres up, at like 12.25m/s...i dont remember exactly tho...

 

[Bej]

hahaha, i thought the question was stupid so for the first half of my answer i wrote absolute crap.

e.g. brawl x k.brains = best athelete where k > 1 therefore more 'brains' than 'brawn' if 'best athelete' is positive

and time and effort (F) is
time x force = impluse therefore he has an impulse go get better.

but the second half i actualyl did the calculations and talked about how he could reach max range and max height.
i beilieve the question wanted you to disproved that he could stay in the air for 2.5 secs as that means he would have reached a max height on about 7 metres, and thats just stupid, too bad i didnt actually write that.

l bej l + l funny l = rep

 

[Kelvy]

I think you were meant to assess the validity of the statement, so ye i got U = 12.25 and max height = 7.6525. i.e. the dude is EXAGERRATING about time of flight in the quote

 

[cephren]

...seems agreed that MJ was an unexpected sort of question... I had no idea... so i changed it 2 a Javelin thrower so P.Motion was easier 2 visualise... then I used range eqns coz thats all I kno!... lol... I should have payed attn... I should have studied aswell...

...oh - & 2 those who do Q2Q as an option... what was the LAWS OF PHYSICS that Chadwick abided by 4 the Neutron thingy???... I said "Matter Can Neither Be Created Nor Destroyed" coz it was all that I could think of... dont even kno if that is relevant... oh and I also said as a 2nd LAW that "If At First You Don't Succeed, Try, Try Again"...

...Im guessing that was an easy test?... coz I think I may have passed...+/-10%...

 

[kris12345]

u can give a presice calculation if u assume the shot was a standing jump shot performed from a stationary start there for u=0 and u know acceleration as 9.8 and time so u can calculate using the delta Y formula
i got 12.... something as the verticle veloicty and a max hieght of 7.35 metres or something which is impossible for a human to jump that high especially when a hoop is only 10 foot of the ground

 

[Charon.]

i see..........
i said that assuming he wanted to jump a metre, which is pretty hard then heed have to have an intialk velocity of about 25km/h. Im pretty sure pro athletes cant even achieve that.

 

[Muzzy]

Mj

For this question u really just needed rouch calculations

 

[superbird]

For this question u really just needed rouch calculations

i think so too. was it really necessary to work out the height and all?

 

[sub]

uh there is a thread on this already...but i agree it was a retarded question

were we ment to say that basketballers have no concept of the "laws of physics that keeps them there"? i reckon the test writers weren't mj fans...