In a rollercoaster, the first hill is always the tallest. Subsequent hills are never as tall as the first. Why? What would happen to the rollercoaster cart
if the second, third, etc. hills were taller?

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

the closer the planet is to the sun, the larger the gravity

d. platinum would have the greatest temperature increase because it has the lowest specific heat.