motion of the particles describe by x=a+bt^2 when a= 15 cm and b=3cm find instantaneous velocity at time 3 sec?
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x=0.15+0.03×3×3
x=0.24
v=x÷t
v=0.24÷3
v=0.8m/s
x=0.24
v=x÷t
v=0.24÷3
v=0.8m/s
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