The own speed of the ship is 21.6 km / h. The current speed is 4.9 km / h. Find the speed of the boat upstream and upstream.

Speed, time and distance are physical quantities that depend on each other.

According to the condition of the task, we determine the speed of the motor ship downstream and against it, if it is known:

V proper = 21.6 km / h, and V current = 4.9 km / h:

V flow = V sob + V flow = 21.6 + 4.9 = 26.5 km / h.

V prot. flow = V sob – V flow = 21.6 – 4.9 = 16.7 km / h.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.