How to transfer bat's transnational and angular velocity to ball to simulate realistic ball movement.

I am trying to make a baseball game in virtual reality with help of HTC VIVE. When I hit the ball with bat, the speed at which I hit the ball has no effect on ball.

It should be in realistic way right if I hit ball slowly it should not go far, if i hit it with more velocity, the ball should go far basing on my bat's transnational and angular velocity.

How can I achieve this in game engine Unity3D? Are there any inbuilt methods or do we need yo write our own physics equation? The point of rotation is about bat handle.

Someone help me here with some resolving please.