1.

A particle moves along the positive branch of the curve `y = (x^(2))/(2)` where `x = (t^(2))/(2),x` and y are measured in metres and t in second. At `t = 2s`, the velocity of the particle isA. `2hati - 4hatj`B. `2hati + 4hatj`C. `4hatj+ 2hatj`D. ` 4hati- 2hatj`

Answer» Correct Answer - B


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