Eli stands on a skateboard at rest and throws a 0.5-kg rock at a velocity of 10,0 m/s, Eli moves back at 0,05 m/s. What is the combined mass of Eli and
the skateboard? Include the unit,

What three things determine the shape and size of a puddle when water is poured out onto a surface

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?

Select the correct answer. why are scientific models important in the study of science? a. they always involve critical mathematical calculations. b. they scientists understand complex ideas and objects that aren’t easy to handle. c. they enable scientists to popularize their work in society. d. they are required when conducting any peer review process. e. they are necessary for turning a hypothesis into a law.