Question

6.A toy train is moving along x –axis in such a way that its co-ordinate x varies with time t according to the expressionx = 2 –5 t +6 t2+ 9 t3where x is in metresand t is in seconds . What is the initial acceleration of toy train ?

Answer 1

Explanation:

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Answer 2

$\frac{dx}{dt} = \frac{d}{dt} + (2 - 5t + 6 {t}^{2} )$

$x = 0 - 5 + 12t$

$x _{in} = - 5$