0. Jack throws a ball at an angle of 60° above the horizontal from the top of 45 m tall building. If it strikes the ground 50 m away find: ) Time of flight (Ans: 5.18 s) -) Initial speed with which he throws the ball. (Ans: Vo =19.29m/s ) E) Final speed with which it strikes the ground. (ans: Vf = 35.40m/s)

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A: We know, 1 centimeter (cm) = 10 millmeters (mm)

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A: 10 hrs rest after every 11 hrs v=55mph D=2255 mile

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.