A projectile is fired with a velocity u at an angle θ with the ground. At some instant during motion, its velocity makes an angle α with the horizontal direction. The speed of the particle at this tim

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A projectile is fired with a velocity u at an angle θ with the ground. At some instant during motion, its velocity makes an angle α with the horizontal direction. The speed of the particle at this time will be

TestHub · Accepted Answer

The horizontal velocity component remains constant. v cos α = u cos θ v = c o s α u c o s θ ​ v = u cos θ sec α

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