If I drop a watermelon from rest from the top of a tower, and it takes 3.34 seconds to hit the ground, calculate how tall the building is? g = -9.81 m/s2

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Which articulations allow for greatest range of motion?