Posted by NEED HELP ASAP!!!!!!!!!!! on Tuesday, October 16, 2012 at 5:02am.
the height from where the water bomb will be released on the overpass is 4.5 m and the target student is 170 cm tall. the student realises that, as his target will be moving, he must release the water bomb when his friend is a certain horizontal distance from the point of impact. if his friend is walking towards the overpass at 2m/s calculate the distance

PHYSICS!!!!!!!!!!!!!!!!  Henry, Thursday, October 18, 2012 at 3:33pm
h = ho  (Vo*t + 0.5g*t^2 = 1.71 m.
4.5  (0 + 4.9t^2 = 1.71
4.9t^2 = 1.71  4.5 = 2.79
t^2 = 0.5694
Tf = 0.755 = Fall time.
d = 2m/s * 0.755s = 1.51 m.