Explanation:
mathematically,
[tex]kinetic \: energy \: = \frac{1}{2} m {v}^{2} [/tex]
where m= mass
and v=velocity
given that,
kinetic energy=493900J
mass =5040kg
making velocity the subject
[tex]v = \sqrt{ \frac{2 \times kinetic \: energy}{mass} } [/tex]
substitute their values in the formula
[tex]v = \sqrt{ \frac{2 \times 493900}{5040} } [/tex]
[tex]v = \sqrt{ \frac{987800}{5040} } [/tex]
[tex]v = \sqrt{196} [/tex]
[tex]v = 14m {s}^{ - 1} [/tex]
Thus the velocity is 14meters per second
