Question: A 2 . 0 - kg mass is projected vertically upward from ground level with an initial speed of 3 0 m / s .

A 2.0-kg mass is projected vertically upward from ground level with an initial speed of 30 m/s. The mass rises to a maximum height of 35 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?
a.
-0.21 kJ
b.
-0.47 kJ
c.
-0.40 kJ
d.
-0.34 kJ
e.
-0.69 kJ

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