A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building? (in m)

Question

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building? (in m)
could someone help me please!!!

Damon · Accepted Answer

We just need to do the vertical part of the problem. I assume it hit the ground where H = 0 Vi = 15 sin 35 = 8.6 m/s up H = Hi + Vi t - 4.9 t^2 0 = Hi + 8.6 (2.7) - 4.9 (2.7)^2 Hi = 12.5 meters