Acar speeds up as it rolls down a hill. which is this an example of? positive acceleration negative acceleration relative velocity

Describe the function of the endomembrane system? what organelles are involved?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

What is the momentum of a 47-gram tennis ball that is traveling at 40 m/s