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Please answer each part.... A) A stone is thrown directly upward with an initial speed of...

Please answer each part....

A) A stone is thrown directly upward with an initial speed of 7.9 m/s from a height of 19 m.

What is the speed of the stone in m/s when it hits the ground?

Use g = 9.8 m/s2

Enter a number with 2 digits behind the decimal point.

B) Consider motion in one dimension. (The sign of the vector quantities is their direction indicator.)
An object moves in the positive x-direction with speed 3.6 m/s for 2 s. It stops for 2.1 s and then accelerates with acceleration -5.3 m/s2 for 2.5 s.
What is the average velocity of this object in units of m/s?
Enter a number with two digits behind the decimal point.

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