45. A particle of charge-4.0 uC is fixed at a height 3.0 m above the ground and another particle of mass 0.9 g and charge 1.0 uC is held under the previous particle at a height 2.2 m above the ground. What minimum speed must be given to the second particle so that it reaches the ground? Acceleration of free fall is 10 m/s. h:6 M/s

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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.