mbonilla073
20.01.2020 •
Physics
Apitcher throws a baseball towards home plate. the baseball, which has a mass of 142 g, approaches the plate with 128 j of kinetic energy.
calculate the speed of the baseball.
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Ответ:
K.E=128 J
Speed or Velocity=?
K.E=1/2*m*v^2
128=1/2*142*v^2
128=72*v^2
v^2=128/72
v^2=1.777
by taking square rt
v= 1.333ms-1
so the speed will be 1.333 ms-1
Ответ:
hey sweetie pie good morning dear