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 find the bear's speed with respect to the rock, we need to add the velocities of the bear and the man. Since they are both moving in the same direction and the velocities are positive, we simply add their magnitudes.
Given:
Bear's velocity with respect to the man = 25 m/s
Man's velocity with respect to the rock = 20 m/s
To find the bear's velocity with respect to the rock:
Add the magnitudes of their velocities.
Bear's velocity with respect to the rock = Bear's velocity with respect to the man + Man's velocity with respect to the rock
Bear's velocity with respect to the rock = 25 m/s + 20 m/s
Bear's velocity with respect to the rock = 45 m/s
Therefore, the bear's speed with respect to the rock is 45 m/s.