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2. motion in straight line — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics2. motion in straight line1 Mark
MCQ
A ball $P$ is dropped vertically and another ball Q is thrown horizontally with the same velocities from the same height and at the same time. If air resistance is neglected, then
  • A
    Ball P reaches the ground first
  • B
    Ball Q reaches the ground first
  • ✓
    Both reach the ground at the same time
  • D
    The respective masses of the two balls will decide the time
✓

Answer

Correct option: C.
Both reach the ground at the same time
c
(c)Vertical component of velocities of both the balls are same and equal to zero. So $t = \sqrt {\frac{{2h}}{g}} $

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