Using the formula 4.9t^2... A object is dropped how long will it take it to fall 92 meters

Answer 1

d = 4.9t^2 = 92m,

4.9t^2 = 92,
t^2 = 92 / 4.9 = 18.78,

t = sqrt(18.78) = 4.3s.

Answer 2

4500 calories if heat ae added to a 50-gram ice cube at -10oc.