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STD 11 - 3.2 , motion in plane — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3.2 , motion in plane4 Marks
MCQ
A projectile is projected with speed $u$ at an angle $\theta$ with the horizontal. The average velocity of the projectile between the instants it crosses the same level is ............
  • ✓
    $u \cos \theta$
  • B
    $u \sin \theta$
  • C
    $u \cot \theta$
  • D
    $u \tan \theta$
✓

Answer

Correct option: A.
$u \cos \theta$
a
(a)

displacement $= x = u \cos \theta \times t$

time $= t$

$\therefore v _{\text {avg }}=\frac{ x }{ t }=\frac{ u \cos \theta \times t }{ t }= u \cos \theta$

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