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Subhajit Mondal

Answers (1)

We know, R=(u²sin2∆)/g ,∆=angle of projection So, 45.7=(460²sin2∆)/10 sin2∆≈1/460≈2∆ ,as ∆ is too small ∆≈1/920 So, tan∆≈∆ as ∆ is small h/R≈∆ h≈45.7/920≈0.05m=5cm

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