Using the equation for motion in one dimension:
h = Vo T + (1/2) g * T^2
h = 20m/s 2s + (1/2) 10m/s^2 (2s)^2h = 40m + (1/2) 10m/s^2 * 4s^2h = 40m + 20mh = 60 meters
Therefore, the height h is 60 meters.
Using the equation for motion in one dimension:
h = Vo T + (1/2) g * T^2
h = 20m/s 2s + (1/2) 10m/s^2 (2s)^2
h = 40m + (1/2) 10m/s^2 * 4s^2
h = 40m + 20m
h = 60 meters
Therefore, the height h is 60 meters.