A particle is projected vertically upward with velocity v₀ = √(2gh). At the maximum height, its velocity is observed to decrease linearly with time. What is its acceleration at half the maximum height?
Correct: A
At any height, the acceleration due to gravity acts downward regardless of the velocity's direction. Since the maximum height is determined by energy conservation (height = h), the acceleration remains constant as g downward. Even at half the maximum height, the net vertical acceleration is still g downward. This is because acceleration is independent of the particle's velocity direction in projectile motion.