1. Roy normally drives on a freeway from a city C to city A at an average speed of 90 km/hr and his trip took him 2 hours and 30 minutes. One day with heavy traffic, he slows down and drive the same distance at an average speed of 75 km/hr. How much longer does the trip take for Roy?
2. Two cyclists travel simultaneously towards each other from points 40 km apart. Cyclist A has a speed of 12 km/hr while cyclist B travels 4 km/hr slower than cyclist A. How many hours will they meet each other ? How far apart are they after 75 minutes?
3. A car is moving with an average speed of 72 km/hr. Determine (a) the total distance traveled by the car in 50 minutes, (b)the time needed to travel 90 000 m.
4. It is now 1:00 PM. At what time before 2:00 o’clock with the minute hand overtake the hour hand? At what time before 2:00 o’clock will the minute hand and the hour hand become perpendicular for the first time? At what time before 2:00 o’clock will the minute hand and the hour hand become perpendicular for the second time ?
5. Calculate your average speed in m/s and km/hr if you jog at 2.5 m/s for 10 minutes and then walk at 600 m for 400 seconds.
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