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Question

A particle is projected vertically upwards with velocity 20 m/s. It will be at height 15 m at two time instant while going up and while coming down. Difference in these two time instants is [g = 10 m/s2]

एक कण को 20 m/s के वेग से ऊर्ध्वाधर रूप से ऊपर की ओर प्रक्षेपित किया जाता है। यह ऊपर जाने के दौरान तथा नीचे आने के दौरान दो समय क्षणों पर 15 m की ऊँचाई पर होगा। इन दो समय क्षणों में अन्तर है [g = 10 m/s2]

A
3 s
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B
1 s
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C
32s
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D
2 s
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