1.

The co-ordinates of a moving particle at any time t are given by x = αt3 and y = βt3. The speed of the particle at time t is given by (1) 3t√(α2 + β2)(2) 3t2√(α2 + β2)(3) t√(α2 + β2)(4) √(α2 + β2) 

Answer»

Answer is (2) 3t2√(α2 + β2)

νx = dx/dt = 3 ∝ t2. or νy = dy/dt = 3βt2

ν = √(ν2x + ν2y) = 3t2√(α22



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