# Measuring Acceleration Using A Coin

Classical Mechanics Level 3

An elevator is descending with a uniform acceleration. To measure the acceleration, a person in the elevator drops a coin at the moment the elevator starts. The coin is 1.5 m above the floor of the elevator at the time of being dropped. The person observes that the coin strikes the floor after 1 s. What is the acceleration of the elevator to the nearest integer?

×