The highest barrier that a projectile can clear is 19.7 m, when the projectile is launched at an angle of 15.0o above the horizontal. what is the projectile’s launch speed?

76 m /s

Explanation:

maximum height, H = 19.7 m

Angle of projection, θ = 15 degree

Let u be the projectile launch speed

Use the formula of maximum height

u = 75.9199 = 76 m /s

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