easy · MCAT chem-phys
A surgical robot arm moves along a linear track. Its position x as a function of time t is given by a graph with a constant, positive slope.
Which of the following must be true of the robot arm's motion?
- It is moving with a constant non-zero acceleration.
- The arm is at rest.
- The velocity is increasing over time.
- It is moving with a constant non-zero velocity.
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