anonymous
  • anonymous
A 1kg ball is thrown upwards with a launch speed of 10m/s. Assume air resistance is a constant force of 2.5N. How much nonmechanical energy is generated from launch to the maximum height reached by the ball
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
|dw:1327065330013:dw|here you first find out the height reached by ball acceleration due to gravity is 10 in the downward direction an addition of 2.5m/s^2 acts in the downward direction so add them both as they say air resitance is a contant force apply equation v^2-u^2=2as to find max ht energy=work done (capability) work done=F.s find it!
anonymous
  • anonymous
as they say non-mechanical energy we say work done by air resistance as mechanical energy=k.e+p.e
anonymous
  • anonymous
is the max height 4? because for the final answer i got 50, but thats wrong...

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anonymous
  • anonymous
OHHHH
anonymous
  • anonymous
UGH, nevermind, i messed up my calculations in the calculator, im really tired. THANK YOU SO MUCH.
anonymous
  • anonymous
.04m
anonymous
  • anonymous
one more thing, so air is non mechanical energy? and huh? i did w=fdcos =2.5 x 4 = 10 ?
anonymous
  • anonymous
ya dont worry abt cos@ as angle here is 180 ie w=2.5*0.04*-1
anonymous
  • anonymous
why did you change it to .04? because i used 4 and that got me the right answer?
anonymous
  • anonymous
ya ya in metres that is right
anonymous
  • anonymous
ohhh okay, thanks soo much! seriously!
anonymous
  • anonymous
omg... if youre still there, what is non mechanical energy and how did you know air resistance was it?

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