Physics Free Fall

Question

An arrow is fired into the air and it reaches its highest point 3.0 seconds later. What was its velocity when it was fired?

Answer 1

Assuming it was fired straight up, as it rises against gravity, it loses 9.8 meters per second each second. At its highest point its speed is zero, so that means it must have started at 3 X 9.8 = 29.4 meters per second.