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10.A runner travels 35.0 m at a steady speed of 4.7 m/s. The time taken is A) 7.4s B) 0.1 s C) 164.5 s D) 14.9s E) 3.7s 11. What length of time would it take a hiker to travel a total distance of 5 km at an average speed of 3.9 kmfh? A) 1.3 h B) 0.8h C) 19.5h D) 2.6h E) 0.6h 12. Convert 267 m/s to kilometres per hour. A) 961.2 km/h B) 74.2 km/h C) 16.0 km/h D) 4450.0 km/h B) 9612.0 kmfh 13. Convert 371 km/h to metres per second. A) 1335.6 m/s B) 103.1nL/s C) 22.3 m/s D) 6183.3 n1/s E) 10.3 nifs 14. The best description for an object undergoing uniform motion is that it: A) is moving. B) maintains a constant speed. C) always changes its speed. D) maintains a constant speed in the same direction. E) always changes its speed and direction. 15. When a ball is thrown upward, it: A) accelerates upward. B) accelerates upward, then downward. C) accelerates downward. D) does not accelerate until it reaches the top of its ight. E) does not accelerate until it hits the ground again