1.

A body starts from rest with an accleration of 6m/s^2 along x axis and 8m/s^2 along y axis.its distance from the origin after 4 sec

Answer»

s = UT + ½at²

u = initial velocity = 0,

along x-axis => sₓ = 0t + ½at² = 3(4)² = 48 m (in the +TIVE direction)

along y-axis => sᵧ = 0t + ½at² = 4(4)² = 64 m

distance from origin = d = √ [(sₓ)² + (sᵧ)² = √ [(48)² + (64)²] = √[6400] = 80 m



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