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3.2 , motion in plane — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics3.2 , motion in plane1 Mark
MCQ
A projectile is thrown from a point in a horizontal plane such that the horizontal and vertical velocities are $9.8 \;ms ^{-1}$ and $19.6\; ms ^{-1}$. It will strike the plane after covering distance of ........ $m$
  • A
    $4.9$
  • B
    $9.8$
  • C
    $19.6$
  • ✓
    $39.2 $
✓

Answer

Correct option: D.
$39.2 $
d
$R = \frac{{2{u_x}\,{u_y}}}{g}$

$\therefore \, = \frac{{2 \times 9.8 \times 19.6}}{{9.8}}$

$\therefore \,R = 39.2\,m$

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