A boat is traveling upstream at 14 mph with respect to a river that is flowing at 6 mph (with respect to the ground). A man runs directly across the boat, from one side to the other, at 6 mph (with respect to the boat). The speed of the man with respect to the ground is:

10

10km/hr

Madarchod

10

To find the speed of the man with respect to the ground, we need to consider the velocities of the boat and the river.

Let's break down the problem:

1. The boat is traveling upstream at 14 mph with respect to the river.
2. The river is flowing at 6 mph with respect to the ground.

To find the speed of the boat with respect to the ground, we can use vector addition. Since the boat is moving upstream, we subtract the velocity of the river from the velocity of the boat:

Boat (ground) = Boat (river) - River
= 14 mph - 6 mph
= 8 mph

Now, the man is running directly across the boat from one side to the other at 6 mph with respect to the boat. To find the speed of the man with respect to the ground, we add the velocity of the boat to the velocity of the man:

Man (ground) = Man (boat) + Boat (ground)
= 6 mph + 8 mph
= 14 mph

Therefore, the speed of the man with respect to the ground is 14 mph.