You have two pucks that are slid across a frictionless horizontal surface at the same initial speed, one puck passes over a large dip in the surface. Which one reaches the end of the track first?

Both pucks start at the same speed and time on a frictionless track. One goes down and up a large dip and then returns to the same starting height. Which one arrives to a finish line first?

Break it down to vertical and horizontal components and you will see that they arrive at the same time