anonymous
  • anonymous
Please help??
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
shubhamsrg
  • shubhamsrg
How comfortable are you with eqns of motion ?
anonymous
  • anonymous
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AravindG
  • AravindG
please post this in physics group
anonymous
  • anonymous
what is the problem? A lot of problems assigned to mathematics classes are actually simple physics problem
PhoenixFire
  • PhoenixFire
@sarah_hendrix7 Do you still need help?
anonymous
  • anonymous
@PheonixFire If you're willing, I'd love some help.
anonymous
  • anonymous
what do you know about an object in freefall? what equation governs its trajectory? in this case it's a single dimensional trajectory. think of the acceleration due to gravity.
PhoenixFire
  • PhoenixFire
Use the equation \[x_f=x_o+v_ot+{1 \over 2}at^2\] Xf is final position Xo initial position Vo initial velocity a acceleration (in this case just gravity) t time For your problem you can set Xo=0, Vo=0. plug in the rest and you'll know how far the object has fallen after time of 1.1 sec. I know this equation is not really needed because the values get set to 0 so here's the shorter version people tend to remember more: \[h={1 \over 2}at^2\]Now you know for reference where this equation is from.
PhoenixFire
  • PhoenixFire
For question (b) take the first equation I gave you and rearrange for Vo. plug in the values and you should get the answer.

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