A boat can travel at 12 km/h in still water. If it travels downstream in a river

A boat can travel at 12 km/h in still water. If it travels downstream in a river flowing at 3 km/h, what is its speed relative to the riverbank?

A boat can travel at 12 km/h in still water. If it travels downstream in a river flowing at 3 km/h, what is its speed relative to the riverbank?

Step 1: Identify the speed of the boat in still water, which is 12 km/h.
Step 2: Identify the speed of the river current, which is 3 km/h.
Step 3: Understand that when the boat travels downstream, it moves with the current of the river.
Step 4: To find the speed of the boat relative to the riverbank, add the speed of the boat to the speed of the river.
Step 5: Calculate the total speed: 12 km/h (boat) + 3 km/h (river) = 15 km/h.
Step 6: Conclude that the speed of the boat relative to the riverbank is 15 km/h.

Relative Speed – Understanding how to calculate the speed of an object in relation to another moving object.
Vector Addition – Applying the concept of adding speeds in the same direction to find the resultant speed.