Which of the following is a chemical change?
a. freezing water
b. melting ice
c. bending a wire
d. burning paper

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

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?

Which is a substance that can be separated by physical means and is not the same throughout