anonymous
  • anonymous
A juggler is performing an act by juggling several balls. The juggler throws the balls up at an initial height of 3.9 feet with a speed of 14.8 feet per second. If the juggler did not catch a ball, about how long will it take the ball to hit the floor? 1.45 secs 1.14 secs 0.28 secs 0.21 secs
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Do..u knw kinematics equations of motion
anonymous
  • anonymous
um.....no
lgbasallote
  • lgbasallote
^^that sounds like physics

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anonymous
  • anonymous
V = u + at
anonymous
  • anonymous
um... i thought it was H(t)= -16t^2+vt+s
anonymous
  • anonymous
first we need to convert feet to meter
anonymous
  • anonymous
ok...whats next
anonymous
  • anonymous
then the time it takes to reach the maximum height
anonymous
  • anonymous
wait why do i change it from feet to meters?
anonymous
  • anonymous
because we are going to use a=g=-9.81m/s^2
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
Now, can u?
anonymous
  • anonymous
whats the a and g? sorry
anonymous
  • anonymous
that is accleration
anonymous
  • anonymous
ok.......walk me through
anonymous
  • anonymous
convert 3.9 feet into meter
anonymous
  • anonymous
about one meter?
anonymous
  • anonymous
14.8 feet per second in meter per second?
anonymous
  • anonymous
oh okay 4 meters and something
anonymous
  • anonymous
3.9 feet = 1.18872m and 14.8 feet per second=4.51104 meter per second
anonymous
  • anonymous
now,v=u+at 0=4.51 + (-9.81)t t=0.46seconds
anonymous
  • anonymous
Again, v^2=u^2+2as 0^2=(4.51)^2 + 2(-9.81)s s=1.04 m
anonymous
  • anonymous
So, maximum height = 1.19+1.04 m = 2.23m
anonymous
  • anonymous
Now, s=ut+1/2 at^2 2.23 = 0*t + 1/2 (9.81) t^2 t=0.67 seconds
anonymous
  • anonymous
So, total time = 0.46+0.67 =1.13 seconds
anonymous
  • anonymous
got it?
anonymous
  • anonymous
ohh okay.
anonymous
  • anonymous
thanks
anonymous
  • anonymous
welcome

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