A suitable system for measuring the location of events in time and space would be to have a three dimensional grid of measuring rods with a clock at each point on the grid. How should the clocks be synchronized to ensure consistent measurements?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?