Not too easy. Not too difficult.
Calculus is good class for understanding the fundamentals of engineering along with physics of course,but math is the most independent of the two. It may be difficult at some point, but don't fret--studying at least an hour a day without distractions makes it really easy. If that still troubles you then try studying with a group before or after class for about an hour or so. This will definitely improve your study habits as well as get things done faster.
I learned to derive which is really beneficial for later STEM classes that I am going to take. You can say that it is the root of my major. Deriving may seem irrelevant at the time you are taking the class, but if you take Phys 3A (depending on your school; Physics: Newton's Laws), you can see the uses of calculus.
Hours per week:
Advice for students:
Do it--math is a course that you shouldn't skip just because how difficult it appears. After learning the basics, all you have to do is follow setups from the examples on the book or teacher. There is also a website that is good for review called Slader.com. This site is going to be your best friend in all math courses.