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Question

Derive the equations.Vector method of three equation of uniform accelerated motion

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Solution

In case of uniform accelerated motion in any direction:
Acceleration,
a=ΔVΔt=BCAC=VV0tV=V0+at ..... (First equation of motion)
Now ,area of v-t graph =total displacement
s=OA×OD+12×AC×BC
=Vot+12t(VV0)
s=V0t+12t×at ...(Second equation of motion)
Now s= area of trapezium OABD
=12×(OA+BD)×AC=12(VV0)t=12(VV0)VV0as=V2V022a
V2V02=2a.s ...(Third equation of motion)

980703_1075440_ans_4998e5943d0e45e181903a964abb37fc.png

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