A brick falls from h m of height from a construction building. The brick touches theground after 3 s. Calculate the value of h. please help me.. this is important

The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. in a closed system, this equilibrium exists as why does a carbonated soft drink lose carbonation when the container is left open? a.water evaporates, which favors the formation of h2co3. b.pressure decreases, which favors the formation of h2co3. c.the open container warms up, which causes more gas to escape. d.co2is removed, which favors the formation of h2co3.

Aplane's average speed between two cities is 600 km/h. if the trip takes 2.5 hours, how far does the plane fly?

Are good conductors of heat also good conductors of electricity? explain your answer.