Help one question phyisc

1. A body projected downward at an angle of 30ø with the horizontal from the top of a building 170 m high. Its initial speed is 40 m/s. How long will it take before striking the ground?2. In reference to #1, find out how far from the foot of the building the body will strike and at what angle with the horizontal.ÿ3calculate it’s vertical speed after 1.7 secÿ4 what’s it’s verical position after 1.7secÿ5.whats it’s holarizontal position after 1.7 secÿDo it as soon as possible