Question

A body of mass 2kg is projected at an angle of 60 degree to the horizontal with a speed of 20m/s . The work done by gravity by the time the velocity vector makes 30degree to the horizontal (g=10m/s^2)
A) 800/3 J
B) -800/3 J
C) 400/3 J
D) -400/3 J

Answer 1

Answer:

(a) 800/3 J

Explanation:

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