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