A kid jumps a meter into the air. How long before he lands? The answer to this question is .95 seconds. I first calculated the time it took for the kid to fall downward. Which was about .45 seconds. But I used the acceleration of 9.8 m/s^2 since he was falling downward. My teachers answer of .95 is assuming that he jumps upward at the rate of 9.8 m/s^2. Is that accurate? I mean, the kid could have jumped up really quickly, but gravity would still pull him down at a rate of .45 sec. Thank you for the clarification. Also what is this kid's initial velocity? Is it zero?