What the difference between the tundra and the coniferous forest

Differences in Plant Life

The taiga has a thick forest of conifers such as pine and spruce, while in the tundra trees are absent completely. This is due in part to the lack of water available in the tundra, but also is a result of permafrost.

Explanation:

The ball stops because of friction,When the ball rolls across the floor, the floor opposes the motion of the ball which takes away from the momentum of the ball.