4.) A crate of 5 kg of mass is 20 N as shown in the figure. It is attracted by the action of a force. Between the crate and the surface The kinetic friction coefficient is 0.22. a) Draw the free body diagram. b) Find the acceleration. c) What is the work done by the force F after 5 s?

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A: Draw the free-body diagram of the table as shown below.

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A: Ans:- Image-1

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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.