What is pitch? Pitch is a shift in your vehicle’s weight forwards or backwards. When it happens, the weight is moving from one end of the vehicle to the other - from the back to the front or from the front to the back.
When you brake, it causes a drop in the front end of your car and lifts the rear end (like in the above gif). This is more noticeable the harder you brake. When you accelerate, your front end is lifted as your rear end drops. Same as braking, this is more noticeable the harder you accelerate. It’s especially noticeable when you’re stopped and accelerate suddenly. So that’s pitch! It’s a pretty simple thing that you encounter every time you drive. Be sure to check out its buddies, yaw and roll.