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During the initial or very first part of the downward phase of the squat, before the...

During the initial or very first part of the downward phase of the squat, before the person hits the midpoint of the downward phase, which of the following explains velocity and acceleration?

a. Velocity would be negative, acceleration positive

b. Velocity would be negative, acceleration would be negative

c. Velocity would be positive, acceleration would be positive

d. Velocity would be positive, acceleration would be negative

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