Question Rough acceleration: Answers Is recommended. Can cause mechanical damage. Is required on slippery surfaces. Explanation Always speed up smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage. This questions appears in the following tests: Idaho Tank Maryland Class B Knowledge Test Minnesota Class A Knowledge Test Mississippi Class B Knowledge Test Missouri Class A Knowledge Test Missouri Tank New Hampshire Class B Knowledge Test New Hampshire Tank South Carolina Class B Knowledge Test Utah Class A Knowledge Test Vermont Class B Knowledge Test Wyoming Class B Knowledge Test