At the circus, the Human Cannonball is fired from his cannon at a speed of 350 m/s. How long does it take him to fly 200 m?

It takes him 0.57 to fly 200 m

Explanation:

Velocity = distance/ time  

so  t= d/v

t= 200m /350m/s  = .57 s

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.