Question 6
Momentum: $mv=30$
Kinetic energy: $\frac{1}{2}mv^{2}=150$
$mv^{2}=300$
$\frac{mv^{2}}{mv}=\frac{300}{30}$
$v=10, m=3kg$
Momentum: $mv=30$
Kinetic energy: $\frac{1}{2}mv^{2}=150$
$mv^{2}=300$
$\frac{mv^{2}}{mv}=\frac{300}{30}$
$v=10, m=3kg$