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  4. A ball is dropped vertically from height h and is bouncing elastically on the floor (see figure). Which of the following plots best depicts the acceleration of the ball as a function of time <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/33607ff02846b178cf03756365187faf-.jpeg />

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Q. A ball is dropped vertically from height h and is bouncing elastically on the floor (see figure). Which of the following plots best depicts the acceleration of the ball as a function of time
image

KVPYKVPY 2017Motion in a Straight Line

Solution:

Acceleration of ball at all instances is $- 9.8\, ms ^{-2}.$ So, correct graph of acceleration and time will be as shown below
image