A coin is dropped from the top of the Tower of Pisa, 53 m above the ground. Suppose instead the coin was tossed in the air with an initial velocity of 4.5 m/s [up]. What is the coin’s velocity right before it hits the ground?

Write the correct abbreviation for each metric unit

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.