Two projectiles of same mass and with same velocity are thrown at an angle \(60º\) & \(30º\) with the horizontal, then which quantity will remain same:
Two projectiles of same mass and with same velocity are thrown at an angle \(60º\) & \(30º\) with the horizontal, then which quantity will remain same:
- Time of flight
- Horizontal range of projectile
- Max height acquired
- All of them
The Correct Option is B
Solution and Explanation
\(R = \frac {2υ^2sin\ θ\ cos\ θ}{g}\)
Range of a projectile for angles of projection θ and 90–θ are same.
So, the correct option is (B): Horizontal range of projectile
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Concepts Used:
Motion in a Plane
It is a vector quantity. A vector quantity is a quantity having both magnitude and direction. Speed is a scalar quantity and it is a quantity having a magnitude only. Motion in a plane is also known as motion in two dimensions.
Equations of Plane Motion
The equations of motion in a straight line are:
v=u+at
s=ut+½ at2
v2-u2=2as
Where,
- v = final velocity of the particle
- u = initial velocity of the particle
- s = displacement of the particle
- a = acceleration of the particle
- t = the time interval in which the particle is in consideration