A projectile is fired from point 0 at the edge of a cliff, with initial velocity

Question

A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v 0x = 60.0 m/s and v 0y = 175 m/s, as shown in the figure. The projectile rises and then falls into the sea at point P. The time of flight of the projectile is 40.0 s, and it experiences no appreciable air resistance in flight. What is the height of the cliff?

A projectile is fired from point 0 at the edge of a cliff, with initial velocity components of v 0x = 60.0 m/s and v 0y = 175 m/s, as shown in the figure. The projectile rises and then falls into the sea at point P. The time of flight of the projectile is 40.0 s, and it experiences no appreciable air resistance in flight. What is the height of the cliff?

Explanation / Answer

-y = voy*t - 0.5*g*t^2

-y = 175*40 - 0.5*9.8*40^2

-y = -840 m

y = 840 m

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