A river's current is 5 km/h. If a boat travels downstream at 15 km/h, what is th

A river's current is 5 km/h. If a boat travels downstream at 15 km/h, what is the effective speed of the boat relative to the riverbank?

A river's current is 5 km/h. If a boat travels downstream at 15 km/h, what is the effective speed of the boat relative to the riverbank?

Step 1: Identify the speed of the river's current, which is 5 km/h.
Step 2: Identify the speed of the boat when it is traveling downstream, which is 15 km/h.
Step 3: To find the effective speed of the boat relative to the riverbank, add the speed of the boat to the speed of the river.
Step 4: Calculate the effective speed: 15 km/h (boat speed) + 5 km/h (river speed) = 20 km/h.
Step 5: The effective speed of the boat relative to the riverbank is 20 km/h.

Relative Speed – Understanding how to calculate the effective speed of an object when considering the influence of another moving object (in this case, the river current).
Downstream vs. Upstream – Recognizing the difference in speed calculations when moving with the current (downstream) versus against it (upstream).