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A projectile is launched from a platform of height h and lands on the ground below....

A projectile is launched from a platform of height h and lands on the ground below.

a) Find the launch angle that maximizes the horizontal range of the projectile.
b) Now suppose the projectile is subject to a strong headwind such that it has a horizontal acceleration of 1.00 m/s2, pointing against its motion. If it is launched at 30∘ above the horizontal with initial speed of 30 m/s, and the platform is 5.00 m tall, how far does the projectile go before it lands?

for a) general solution please.

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