Question

if Hmax is 30root3 and range R is 120m , find initial velocity and angle of projections

Answer 1

♊♊YOUR ANSWERS♍♍

✍√3 m/s

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EXPLANATION —

tanα = H/R = √3/4

Hmax =

$\frac{ {u}^{2} \sin^{2} ( \alpha ) }{2g}$

Range =

$\frac{2u \sin( \alpha ) \cos( \alpha ) }{g}$

Dividing both the equations

30√3/120 =( u tanα) /4

⇒4 = u tanα

⇒u = 4/tanα

⇒u = 4 × √3/4

⇒u = √3 m /s

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