How much k. e. is stored by a 1.0kg ball moving at 1.0m/s

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope.describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

What is the final velocity of the initial velocity of 25 and -50?

The air that we breath is made mostly of which gaseous molecule