gabrielaruby133 gabrielaruby133
  • 14-03-2018
  • Physics
contestada

how high was a brick dropped from if if falls in 2.5 seconds?

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citroen
citroen citroen
  • 14-03-2018
using the kinematic equation d =  V_0 * t  + 1/2 * a * t^2, where d is height you can rewrite this to be d = 1/2*g*t^2 or 4.9t^2
g = a because this is a free fall 
d = 1/2 * 9.81m/s^2 * 2.5^2
d = 30.65625m
d = 30.7m
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