Unity3D violently bouncing on collision

Question

I am making a game like Subway Surfers and am setting velocity to move the player forward for an even forward motion, but using forces to move the player left and right. Upon collision with an oncoming "train", the player violently shoots in the opposite direction of impact, which is odd and undesired. Why is this? A video of this is here.

The train object:

The player object:

And if you don't notice, 'bounce' is completely disabled on the player and train.