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129. A toy car with charge q moves on a frictionlesshorizontal plane surface under the influence of auniform electric field E. Due to the force q Eits velocity increases from 0 to 6 m/s in onesecond duration. At that instant the direction ofthe field is reversed. The car continues to movefor two more seconds under the influence of thisfield. The average velocity and the average speedof the toy car between 0 to 3 seconds arerespectively(2)(3)(4)1 m/s, 3 m/s1 m/s, 3.5 m/s2 m/s, 4 m/s1.5 m/s, 3 m/s |
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