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Question
Shown are several curves (Figure). Explain with reason, which ones amongst them can be possible trajectories traced by a projectile (neglect air friction).
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Solution
Explanation:
Here, the trajectory of path which is followed by the projectile under the gravitational force of earth will be a conic section or parabolic or elliptical or focus must be with centre. So, accordingly, only is required which shows centre of earth as focus of trajectory.
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