The particle P starts from rest at point A at time t = 0 and changes its speed thereafter at a constant rate of 1.5g as it follows the horizontal path shown. Determine the magnitude and direction of its total acceleration at times t = 0.75 s and t = 1.52 s. State your directions relative to the x-axis shown (CCW positive) and choose the angle with the smallest magnitude.

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Projectile Motion