Question

a Cannon ball of mass 500g is fired with a speed of 15 m s. find 1) it's kinetic energy 2) its momentum
Pls give full solution with conversion and signs.

Answer 1

mass 500gm
speed 15 ms

kinetic energy
$\frac{1}{2} m {v}^{2} = \frac{1}{2} \times 500 \times 15 \times 15= 56250 \\ momentum = m {v}^{2} = 500 \times 15 \times 15 \\ 112500$

Answer 2

.not a correct answer