anonymous
  • anonymous
acceleration due to gravity is -32 ft/s2. a ball is thrown upwards from the surface of the earth with an initial velocity of 16 ft/s. what is its velocity when it hits the ground.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
v(t) = a*t +vo
anonymous
  • anonymous
x(t)= 1/2 a t^2 +vo *t + xo
anonymous
  • anonymous
a- acceleration vo- initial velocity xo- initial height

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More answers

anonymous
  • anonymous
t- time
anonymous
  • anonymous
surface would mean xo = 0 initial velocity has been defined as 16 ft/s and acceleration of gravity is given by -32 ft/s^2
anonymous
  • anonymous
first determine the time when the ball hits the ground that means x(t) =0 so solve for t once you've determined the time the ball hits the ground, use the velocity equation (1st equation) to determine the speed at which it hits the ground
anonymous
  • anonymous
this is the general way to solve the problem there are much easier and much quicker ways to solve it, such as using conservation of energy
anonymous
  • anonymous
can u tell me whether the value will be t=1 or not?
anonymous
  • anonymous
@completeidiot
anonymous
  • anonymous
looks like it
anonymous
  • anonymous
velocity = -16?
anonymous
  • anonymous
yup it hits the ground at the same speed it left the ground
anonymous
  • anonymous
thanks for your help.

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