Explain how you could find out whether of not an unknown liquid is water

What is the magnitude of the resultant vector round your answer to the nearest tenth

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?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost