m A cannon sits on a horizontal plain, angled up at 35°. A cannonball is fired with a velocity of 100“. The cannonball hits the ground at the same height from which it was launched. a) What is the maximum height of the cannonball? (Answer: 168 m ) b) What is the flight time of the cannonball? (Answer: 11.7 s) c) What is the horizontal range of the cannonball? (Answer: 959 m) d) What is the impact velocity in magnitude and angle? (Answer: 100@35° below x-axis)

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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.