This is the position-time graph of a mass on a spring. What can you say about the velocity and force at the instant indicated by the dashed line? (Positive direction is to the right.)
- AVelocity is zero,force is to the right
- BVelocity is positive,force is to the right
- CVelocity is negative,force is to the right
- DVelocity is zero,force is to the left
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