Mathematics · Mechanics
An object is projected with kinetic energy K from a point A at an angle of 60° with the horizontal. In the absence of air friction, what is the ratio of the difference in kinetic energies between the point of projection A and the highest point of its trajectory to the kinetic energy at point A?
- 13 : 4✓
- 21 : 4
- 32 : 3
- 41 : 2
Correct answer
3 : 4
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