2.65 Two train cars are on a straight, horizontal track. One car starts at
rest and is put in motion with a constant acceleration of 2.00 m/s². This car
moves toward a second car that is 30.0 m away. The second car is moving
away from the first car and is traveling at a constant speed of 4.00 m/s.
a) Where will the cars collide?
b) How long will it take for the cars to collide?