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1. A body projected downward at an angle of 30° 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. 

3calculate it's vertical speed after 1.7 sec 

4 what's it's verical position after 1.7sec 

5.whats it's holarizontal position after 1.7 sec 

 

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