A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)

To determine the bear's speed with respect to the rock, we need to add the velocities of the bear with respect to the man and the man with respect to the rock.

Given:
- Bear's speed with respect to the man = 25 m/s
- Man's speed with respect to the rock = 20 m/s

To find the bear's speed with respect to the rock, we can use the formula:

Bear's speed with respect to the rock = Bear's speed with respect to the man + Man's speed with respect to the rock

Substituting the given values into the formula:

Bear's speed with respect to the rock = 25 m/s + 20 m/s

Bear's speed with respect to the rock = 45 m/s

Therefore, the bear's speed with respect to the rock is 45 m/s.