8. FORCE AND LAWS OF MOTION
medium

एक वस्तु की गति की अवस्था में दूरी समय सारणी निम्नवत् है

समय (सेकंड) दूरी (मीटर)
$0$ $0$
$1$ $1$
$2$ $8$
$3$ $27$
$4$ $64$
$5$ $125$
$6$ $216$
$7$ $343$

$(a)$ त्वरण के बारे में आप क्या निष्कर्ष निकाल सकते हैं ? क्या यह नियत है? बह रहा है ? घट रहा है ? या शू्य है ?

$(b)$ आप वस्तु पर लगने वाले बल के बारे में क्या निष्कर्ष निकाल सकते हैं ?

Option A
Option B
Option C
Option D

Solution

$(a)$ There is an unequal change of distance in an equal interval of time. Thus, the given object is having a non – uniform motion. Since the velocity of the object increases with time, the acceleration is increasing.

$(b)$ According to Newton's second law of motion, the force acting on an object is directly proportional to the acceleration produced in the object. In the given case, the increasing acceleration of the given object indicates that the force acting on the object is also increasing.

Standard 9
Science

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