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A projectile is launched from point O at the edge of a cliff by the sea,...

A projectile is launched from point O at the edge of a cliff by the sea, with initial speed of 22 m/sm/s at an angle of 45° above the horizontal. The projectile rises and then falls into the sea at point P. The projectile travels a total horizonal distance D = 38 mm from the cliff. Ignore air resistance.

a) If you want to maximize the horizontal range, how should you adjust the launch angle?

b) Calculate the time the projectile is in the air before landing in the sea.

c) Calculate the height of the cliff.

d) Calculate the maximum height of the projectile above sea level.

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