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Motion in a Straight Line — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsMotion in a Straight Line1 Mark
MCQ
An elevator is going down with a constant acceleration. A coin dropped from a point $1.8m$ above the elevator floor takes one second to reach the floor. The magnitude of the acceleration of the the elevator in $ms^{-2}$ is: Given: $g = 10\ ms^{-2}$ 
  • A
    $3.6$
  • B
    $5$
  • C
    $7.2$
  • ✓
    $6.4$
✓

Answer

Correct option: D.
$6.4$

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