Happy spring festival!

The first half of questions 1 and 17 just happened to have an answer from a previous international student, so they will not be translated;

Please look at the second picture for the second half of question 7.

3. See the third picture for the answer to the question19.

These are the beginning of college physics, but in the concept of high school physics, derivatives and definite integrals are used.

Because math teachers often like to use indefinite integral method, while physics teachers like to use definite integral method,

Students will be a little uncomfortable at first. If the physics teacher likes to use indefinite integral to determine constants, then

Physics teachers should be a mess about theoretical mechanics and analytical mechanics.

The answers to the first half of question 17 are as follows:

The second half of question 17 is answered as follows:

The answer to question 19 is as follows: