A 5.0 kg particle is moving with a velocity v(t) = (4.0î + 6.0tĵ) m/s. (Assume momentum is in kg · m/s, force is in newtons, and t is in seconds. Express your answers in vector form. Use the following as necessary: t. Do not include units in your answers.) What is the momentum (as a function of time) of this particle? What is the net force acting on this particle?

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.