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Q.

The three equations of motion are applicable only for ____ accelerated motion along a straight path.


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Detailed Solution

The three equations of motion are applicable only for uniformly accelerated motion along a straight path.
Equations of motion are equations that describe a physical system's behaviour in terms of its motion as a function of time. The equations of motion, in particular, describe the behaviour of a physical system as a set of mathematical functions in terms of dynamic variables such as displacement (s), velocity (v), time (t), and acceleration(a). The three equations of motion are applicable only for uniformly accelerated motion along a straight path.
       v=u+at
       s=ut+12 at2
       v2-u2=2as
Therefore, if acceleration keeps varying, then you will not be able to put a constant value in place of  'a'; rather, you will have to use calculus to accommodate the amendment in acceleration as a function of time.
 
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