A body starts from rest with an acceleration 2 m/s2 till it attains the maximum velocity then retards to rest with 3 m/s2. If total time taken is 10 second, then maximum speed attained is

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[ begin{aligned} u_{1}=& 0, a_{1}=2 m_{s}^{2} v_{1}=& u_{1}+a_{1} t_{1}=0+2left(t_{1}right)=2 t_{1} end{aligned} ] When it staits to setaid. [ begin{array}{l} u_{2}=v_{2}=2 t_{1} v_{2}=0, quad a=-sin left(s^{2}right. end{array} ] ( therefore quad V_{2}=u_{2}+a_{2} t_{2} ) & ( D=2 t_{1}+(-3)left(t_{2}right) ) ( x_{t}=3 t_{2} ) and ( quad t_{1}+t_{2}=10 ) ( therefore t_{1}=b s ) th A ( quad V_{text {inct }}=V_{1}=2 t_{1}=2(b)=ln M / s )

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