- A4 m/s
- B4.8 m/s
- C3.84 m/s
- D5 m/s
Step-by-Step Solution
A's speed = 5 m/s, so A takes 20 s. B runs m in s: m/s.
Answer: A) 4 m/s
A runs at 18 km/h. In a 100 m race he gives B a start of 4 m and still beats him by 4 seconds. What is B's speed?
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