PhysicsLAB: Terminal Velocity

When a Ping Pong ball dropped from the top of a high building reaches terminal speed, its acceleration is zero. Now suppose the same ball is projected upward with an initial speed greater than this terminal speed. At the instant its speed equals this terminal speed on the way up, the magnitude of its acceleration is

    a) zero.
    b) more than zero but less than g.
    c) g.
    d) more than g.

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