1. If forces of nature like river current, wind current, and others obeys the principle of vector addition, how would you explain to the people in your neighborhood the danger during heavy rainy days considering that there are many small rivers in your place/locality/community that merge into the bigger river? Draw a sketch showing the merging of smaller river water current into a single bigger river current. 2. Suppose you want to cross to the other side of a river using your boat. Considering the current of the river, A. How would you direct your boat so that you will reach to the other side of the river that is directly straight from your starting point? Draw a sketch showing the intended/targeted direction of the boat and its final direction due to the current. B. How would you direct your boat so that you will reach the other side of the river at angle behind the direct straight line of the other side of the river from your starting point? Draw a sketch showing the intended/targeted direction of the boat and its final direction due to the current