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1. Which bodies are moving with constant speed?
A. I and II only
B. I and IV only
C. III and IV only
D. II, III and IV only
2. Which bodies are moving with a constant velocity?
A. I only
B. II only
C. III only
D. IV only
3. Which body is accelerating?
A. I and IV only
B. II and III only
C. III and IV only
D. I, III and IV only
