Question

An airplane dropped a flare from a height of 3450 feet above a lake. How many seconds did it take for the flare to reach the water?

Answer 1

Answer: Assuming the simplest possible case, ignoring air resistance and other factors, treat this as a free-fall problem.

• h = gt2/2
• t = √(2h/g) = √[2(3640)/32] sec = ? sec