got a fun problem, but having some problem finishing it, a water ballon is thrown at 12 m/s from roof of building which has height of 30.0 m. what is time of flight, and vel. when hits ground.(adsbygoogle = window.adsbygoogle || []).push({});

im thinking the formula y = y(i) + v(i)sint + 1/2gt2 is used here.

y = 0 + 12*sin(0)t + 1/2(-9.8)t2

y = 0 + 0 - 4.9t2

not doing this problem right, someone plz help me out

thx

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# Given height, and velocity thrown upward, find air-time

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