The velocity of desmond’s car changes from 20 meters/second to 10 meters/second. the change happens in 5 seconds. what’s the acceleration of the car? use . 4 m/s2 2 m/s2 -2 m/s2 -4 m/s2

Which statement best explains the relationship between an area is geography and the temperature of its surface water

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt