Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What is the difference between thw Dewalt Impact driver and the Dewalt Hammer drill?
Document: This driver/drill is very powerful and lighter weight than I expected. The XR model with the 4 AH batteries really make a big difference in battery life. The torque and speed adjustments took a little getting used to but they work as they should. Overall this is a very well made and rugged tool. Not always the case with some of DeWalt's other tools.
For a full review check out my you tube video as I go into detail about its features and demonstrate its performancehttp://youtu.be/4d1tXzIlp5EThis is Dewalts update to their previous 3 speed premium hammer drill the brushed DCD985. The DCD985 is a fantastic drill and the DCD985 improves by making it lighter, more compact and more power efficient with a brushless motor for longer battery life.
This is the best drill I've ever used. Its battery life is amazing compared to the 18 volt. I haven't found anything yet I'd change on it
On the speed 1 the rpms have been lowered 450 rpm. Torque has been raised from 545 UWO to 650 UWO which translates to 708 in/lbs torqueIts great at hammer drilling (seriously check out my you tube video for a demonstration)Has new tech included, an electronic clutch. Instead of the motor running as the clutch slips when the selected torque is reached, it kills the motor when the desired torque is reached.
No problems. Works great.
Exceeds my expectations.
Answer: no