How much simply can you solve it ?
Classical Mechanics
Level
pending
A projectile is fired with a speed u at an angle θ with the horizontal. Find its speed when its direction of motion makes an angle α with the horizontal.
[Post the simplest solution]
uCosαSecθ
More Information Needed.
uCosθSecα
uTanθ-uSecα
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1 solution
Let the speed be v when it makes an angle α with the horizontal. As the horizontal component of velocity remains constant,
vCosα=uCosθ
Thus, v = uCosθSecα