Answer to Question #112059 in Mechanics | Relativity for kosi

Question #112059
7. A particle is projected horizontally at 15ms-1 from height of 20m. Calculate the horizontal distance covered
by the particle just before hitting the ground (g = 10ms-2).
1
Expert's answer
2020-04-27T09:56:31-0400

Given:

v0=15m/s,H=20m/s,g=10m/s2.{v_0=15\:\rm m/s},\\ {H=20\:\rm m/s},\\ {g=10\:\rm m/s^2}.

The horizontal distance


H=v02Hg=152×2010=30m.H=v_0\sqrt{\frac{2H}{g}}=15\sqrt{\frac{2\times 20}{10}}=30\:\rm m.

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