We have that the mass is mathematically given as
m=0.4
Option C
Question Parameters:
A soccer ball is traveling at a velocity of 50 m/s.
The kinetic energy of the ball is 500 J.
Generally the equation for the kinetic energy is mathematically given as
K.E=0.5mv^2
Therefore
m=(2*K.E)/v^2
m=(2*500)/50^2
m=0.4
Option C
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