Answer:
Ping Pong ball move at velocity 160.4 m/s
Explanation:
given data
mass m1 = 7 kg
velocity v1 = 3 m/s
mas m2 = 2.45 g = 2.45 × [tex]10^{-3}[/tex] kg
same kinetic energy
to find out
How fast Ping Pong ball move (v2)
solution
we know same KE
so
[tex]\frac{1}{2}* m1* v1^{2} = \frac{1}{2}* m2* v2^{2}[/tex] ...........1
so v2 will be
v2 = [tex]\sqrt{\frac{m1*v1^2}{m2} }[/tex] .............2
put here value in equation 2 we get v2
v2 = [tex]\sqrt{\frac{7*3^2}{2.45*10^{-3}}}[/tex]
v2 = 160.4
so Ping Pong ball move at velocity 160.4 m/s
