A pitcher 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.
Mass=142g 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
