Question

A stone dropped from the top of a building strikes the ground in 4.2 s. How tall is the building? Someone explain please!

Answer 1

Answer:

well i'm not sure if which unit of measure you need but i think its 86.49 meters  tall.

Answer 2

Well every objects Acceleration is 9.8 meters per second per second. So 9.8 m/s faster every second. I’m not exactly sure how to solve that though