EM-1175
Rate and average speed
E Math · Secondary 3 · Medium · Rate and average speed
A car of length 4.5 m enters a straight tunnel of length 1.2 km at a constant speed of 15 m/s. How long does it take for the car to pass completely through the tunnel?
- 80.3 s
- 79.7 s
- 18.0 s
- 120.5 s
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