Hey there!
So we know that m*v=P.
And in this question m=30
v=5 m/s
P = 30*5 Kgm/s
P = 150 Kgm/s
So, your final answer is 150 Kg.m/s
Hope this helps! :)
All spontaneous processes release free energy
Ehh, Earth rotates around its axis and Earth revolves around the sun as it travels through space.