Which of the the following distance vs time graphs represents an object the is moving at constant non zero velocity

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

The radius of an atom is closest in size to a

What causes the development of most clouds and precipitation in the atmosphere?