A paintball gun is pointed downwards and fires a paintball down at an unknown speed. Initially the paintball gun is 16 meters above the ground. When the paintball strikes the ground below it is traveling at a speed of 24 meters per second. How fast must the paintball gun have shot the paintball initially in meters per second?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.