1. A bus is driving at 59.6 km/h while a lady walks to the front at a speed of 1.1 km/h relative to the bus floor. What is her speed relative to the ground?

2. A boat which travels at 9.9 km/h relative to the water aims straight for the opposite bank of a river. If the average river speed is 9.7 km/h and the boat is 124.9 m downstream when it reaches the opposite side, how wide is the river?

3. A boat which travels at 6.5 km/h relative to the water aims straight for the opposite bank of a 137.5 m wide river. If it reaches the opposite side 21.15 m downstream, what is the speed of the river?

4. A boat with speed of 5.2 km/h relative to the water is heading for a dock 6.586 km upstream. If the river speed is 1.352 km/h, how many minutes will it take to reach the dock?

5. A boat aims straight for the opposite bank of a 73.6 m wide river which is flowing with an average speed of /h river. If it reaches the opposite side 103.4 m downstream, what is the speed of the boat relative to the water?

**When filling out an online test your answer must be in the following format **

1. All answers must be expressed in three significant figures

2. When answering a question put in your numerical answer and a blank followed by the units

3. If the answer can not be express by a single unit (such as force is N or power is W) then express your answer in base units only.

3. if an answer is larger then a 999 then use engineering notion to express 10^(whatever number) Example the answer to a problem is 234500 m/s in engineering notation the answer would be 2.35E5. The E5 means 10 to the power of 5

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