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A projectile is launched at time t = 0 f...

A projectile is launched at time t = 0 from point A which is at height 1 m above the floor with speed `v ms^(-1)` and at and angle `theta = 45^@` with the floor. It passes through a hoop at B which is 1 m above A and B is the highest point of the trajectory. The horizontal distance between A and B is d meters. The projectile then falls into a basket, hitting the floor at C a horizontal distance 3 d meters from A. Find l (in m).

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