Answer to Question #149806 in Physics for jay

Question

A student fires a cannonball vertically upwards. The cannonball returns to the ground after a 6.60s flight. Determine all unknowns and answer the following questions. Neglect drag and the initial height and horizontal motion of the cannonball. Use regular metric units (ie. meters).

Answer 1

$$v=0.5gT=0.5(9.8)(6.6)=32.3\frac{m}{s}\\ h=0.5(0.25)gT^2=0.5(0.25)(9.8)(6.6)^2=53.4\ m$$