Is energy production activity causing a sudden or gradual change?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

How can one make a supersaturated solution? (apex)

How does the viscosity of magma change as magma cools?