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Question

A projectile is projected from ground with velocity 20 m/s at angle of 45º with horizontal. Height of the projectile above the ground, when its speed is minimum, is [g = 10 m/s2]

एक प्रक्षेप्य को धरातल से क्षैतिज के साथ 45º कोण पर 20 m/s के वेग से प्रक्षेपित किया जाता है। जब प्रक्षेप्य की चाल न्यूनतम है, तब धरातल से प्रक्षेप्य की ऊँचाई है [g = 10 m/s2]

A
40 m
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B
20 m
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C
5 m
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D
10 m
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