1. A worker tosses bags one by one to a coworker on a scaffold 2.15 m above his location. Each brick is in flight for 1.8 s. Indicate the direction with the sign of your answer. A. What is the initial velocity of the bags thrown?
B. What is the velocity when they are caught?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.