Qualification > Math

Mechanics (M1) help!

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nox_fjmoony:
Sure
lemme think astar
thanks

And your answer doesn't seem to be matching with the mark scheme..bleh, the mark scheme's so weird

Thanks again, but could you please explain?

astarmathsandphysics:
my mistake
a)sqrt(410) *2/9.8
use v^2-u"2+2as to find the speed at the height of the tower
then v=u+at to find time from top of tower to max height then doublr 9it cos it has to come down.
b) is right
c) is sqrt(410) /9.8-1.25

shushuIG:

--- Quote from: astarmathsandphysics on January 14, 2010, 06:03:23 pm ---A hunter, armed with a bow and arrow, takes direct aim at a monkey hanging from the branch of a tree. At the instant that the hunter releases the arrow, the monkey takes a avoiding action by releasing its hand of the branch. By setting up the relevant equations of the motion of the monkey and for the motion of the arrow, show that the monkey was mistaken in its stratergy.






--- End quote ---
from where did u get this?

nox_fjmoony:
Cool, the first two are okay now thanks.

But the third one isn't matching
o_O

astarmathsandphysics:
I cant see how it is wrong.

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