A particle moves along a straight line OX. At a time t (in seconds), the displacement x (in metres) of the particle from O is given by x= 40 + 12t – t3. How long would the particle travel before coming to rest? 1. 24 m 2. 40 m 3. 56 m 4. 16 m

   Question:  From NCERT  | NEET 2006   |Sub-topic:3.4 INSTANTANEOUS VELOCITY AND SPEED| [Difficult level:Medium]  || 

A particle moves along a straight line OX. At a time t (in seconds), the displacement x (in metres) of the particle from O is given by x= 40 + 12t – t3. How long would the particle travel before coming to rest?

1. 24 m

2. 40 m

3. 56 m

4. 16 m

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: 4. 16 m.

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NCERT Reference

XI Physics page number 43

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