Answer:
9.26 m/s
Explanation:
Energy, in this case kinetic energy is expressed as [tex]KE=0.5mv^{2}[/tex] where m is mass and v is the velocity of the ball. Given that KE js given then making v the subject of the formula [tex]v=\sqrt {\frac {2KE}{m}}[/tex]
Substituting KE with 15 J and m with 0.35 kg then
[tex]v=\sqrt {\frac {2\times 15}{0.35}}=9.258200997725476 m/s\pprox 9.26 m/s[/tex]
