Many, many methods are used for training of tennis and I will name just a few.
Serve:
Keep your lower body still and try to serve as hard as you can
Try to hit the back fence with a regular service action
Forehand:
For consistency, try to hit 100 balls deep (past the service line)
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Basically all the training you need is practice. You also need a good coach to show you different strategies, how to get power, etc. Practice a lot and pay tons of attention to the tips your coach give you.
to hit the ball what does the mass sum of 32 times 16 divided by 5 pluss 2 equal
You will probably have to take a coaching certification course, this may vary depending where u are.