Question 1 A particle moves in a horizontal given by x - y plane with a position vector r = (A * t ^ 3, B * t ^ 4) where

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Question 1
A particle moves in a horizontal given by x - y plane with a position vector
r = (A * t ^ 3, B * t ^ 4)
where t is time in seconds (s) and A and B are constants with values of A = 5.0m * s ^ - 3 and B = 2.0m * s ^ - 4 .
(a) Write down the velocity vector v in terms of A, B and t.
(b) Use your answer to part (a) to find the speed of the particle at time t = 1.5 s.
please solve this with in 30 minuts