WBJEE · Physics · Motion In Two Dimensions
A projectile thrown with an initial velocity of \(10 \mathrm{ms}^{-1}\) at an angle \(\alpha\) with the horizontal. has a range of \(5 \mathrm{m}\). Taking \(g=10 \mathrm{ms}^{-2}\) and neglecting air resistance, what will he the estimated value of \(\alpha\)?
- A \(15^{\circ}\)
- B \(30^{\circ}\)
- C \(45^{\circ}\)
- D \(75^{\circ}\)
Answer & Solution
Correct Answer
(D) \(75^{\circ}\)
Step-by-step Solution
Detailed explanation
Given, initial velocity of particle, \[ u=10 \mathrm{ms}^{-1} \] Range, \(R=5 \mathrm{m}\) Gravitational acceleration, \[ g=10 \mathrm{ms}^{-2} \] As we known that, Range of projectile, \(R=\frac{u^{2} \sin 2 \theta}{g}\) or…
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