Question

The kinetic energy of a body is
2/3 j and momentum 2Ns then it's velocity is​

Answer 1

Explanation:

$kinetic \: energy = \frac{1}{2}m {v}^{2}$

$\frac{2}{3} = \frac{1}{2}m {v}^{2}$

$4 = 3m {v}^{2}$

$m = \frac{4}{3 {v}^{2} }$

$momentum = mv$

$2 = \frac{4}{3 {v}^{2} } v$

$6v = 4$

$v = \frac{4}{6}$

v = 2/3 m/s