The equation of motion of a car is \[s={{t}^{2}}-2t\], where t is measured in hours and s in kilometers. When the distance travelled by the car is \[15\,km\], the velocity of the car is

The equation of motion of a car is \[s={{t}^{2}}-2t\], where t is meas

1.	The equation of motion of a car is \[s={{t}^{2}}-2t\], where t is measured in hours and s in kilometers. When the distance travelled by the car is \[15\,km\], the velocity of the car is
A.	\[2\,km/h\]
B.	\[4\,km/h\]
C.	\[2\,km/h\]
D.	\[8\,km/h\]
Answer» E.

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The equation of motion of a car is \[s={{t}^{2}}-2t\], where t is measured in hours and s in kilometers. When the distance travelled by the car is \[15\,km\], the velocity of the car is

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