<image>Professor Wang and his grandson, Xiaoqiang, often exercise together in the morning, mainly by climbing a mountain. One day, Xiaoqiang let his grandpa start first and then chased after him. In the figure, two segments respectively represent the distance (in meters) that Xiaoqiang and his grandpa are from the bottom of the mountain relative to the time (in hours) spent climbing (timing starts when Xiaoqiang begins climbing). Look at the figure to answer the following questions.
(1) How many meters ahead did Xiaoqiang let his grandpa go first?
(2) What is the total distance from the bottom of the mountain to the top? Who reached the top of the mountain first?
(3) What does the intersection point of the two lines in the figure represent? 