A ball is thrown horizontally from a cliff with speed 12.0\,\text{m s}^{-1}. The vertical component of its velocity after 1.50\,\text{s} is 14.7\,\text{m s}^{-1} downward. What is the speed of the ball at this instant? (Take g = 9.8\,\text{m s}^{-2}.)

H2P-581

Projectile motion

H2 Physics · JC 2 · Medium · Projectile motion

A ball is thrown horizontally from a cliff with speed

12.0\,\text{m s}^{-1}

. The vertical component of its velocity after

1.50\,\text{s}

14.7\,\text{m s}^{-1}

downward. What is the speed of the ball at this instant? (Take

g = 9.8\,\text{m s}^{-2}

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