The body moves according to the law x = 20-4t find the speed of movement of the body.

univerkov | December 13, 2020 | education

Let’s see how long the body will pass in 1 second.
To do this, subtract x (0) from x (1).
x (1) = 20-4 * 1 = 16
x (0) = 20
That is, 4 meters were covered in 1 second.
Answer 4 m / s

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