contestada

A quarterback can throw a 0.430 kg football at 75 m/h.
a. How much kinetic energy does the quarterback have to give to the
ball in order to give it that much kinetic energy?

Respuesta :

samuelonum1

Answer:

9.48*10^-5J

Explanation:

Step one:

given data

mass of ball m=0.43kg

speed v= 75m/h >>>>> to m/s = 75*0.00027

         v =0.021m/s

Required

the kinetic energy KE

Step two

applying

KE= 1/2mv^2

KE= 1/2*0.43*(0.021)^2

KE= 0.5*0.43*0.0004.41*10^-4

KE=0.000094815

KE=9.48*10^-5J

The kinetic energy is 9.48*10^-5J