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

Gujarat BoardEnglish MediumSTD 11 SciencePhysics2. motion in straight line1 Mark
MCQ
Three different objects of masses ${m_1},{m_2}$ and ${m_3}$ are allowed to fall from rest and from the same point $‘O’$ along three different frictionless paths. The speeds of the three objects, on reaching the ground, will be in the ratio of
  • A
    ${m_1}:{m_2}:{m_3}$
  • B
    ${m_1}:2{m_2}:3{m_3}$
  • ✓
    $1:1:1$
  • D
    $\frac{1}{{{m_1}}}:\frac{1}{{{m_2}}}:\frac{1}{{{m_3}}}$
✓

Answer

Correct option: C.
$1:1:1$
c
(c) Speed of the object at reaching the ground $v = \sqrt {2gh} $

If heights are equal then velocity will also be equal.

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