Question:
A particle is projected with velocity 100 mis at 30?. Time of flight is
A particle is projected with velocity 100 mis at 30?. Time of flight is
Updated On: May 12, 2024
- 5 s
- 10 s
- 15 s
- 7.5 s
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The Correct Option is B
Solution and Explanation
As, $T = \frac{2u \sin \theta}{g}$
Here, $u = 100 \, m \, s^{-1} , \theta = 30^\circ , g = 10 \, m\, s^{-2}$
$ \therefore \:\:\: T = \frac{2 \times 100 \times \sin 30^\circ }{10} = 10 s$
Here, $u = 100 \, m \, s^{-1} , \theta = 30^\circ , g = 10 \, m\, s^{-2}$
$ \therefore \:\:\: T = \frac{2 \times 100 \times \sin 30^\circ }{10} = 10 s$
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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