Please help me I have to send for my teacher​

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?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

Which is the most accurate name for the covalent compound p2o3?