Question: A 4 . 0 - k g mass is projected vertically upward from ground level with an initial speed of 2 5 m s .

A 4.0-kg mass is projected vertically upward from ground level with an initial speed of 25ms. The mass nises to a maximum height of 20 m above ground level. What is the change in mechanical energy of the mass caused by air resistance between the point of projection and the point of maximum height?
-0.58kJ
-0.47kJ
-0.43kJ
-0.34kJ
-0.86kJ
A 4 . 0 - k g mass is projected vertically upward

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