Yes you could try switching your grip slightly and see if that will alleviate the problem; if it doesn't it may be time to purchase a new tennis racket.
The way to swing a racket in tennis is called a forehand.
A tennis swing on the strong side of the body is called a forehand.
a backhand
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You swing your racket at the ball
There is not much evidence that it would. These are two different sports, one played indoors (Squash) and one played outdoors (tennis), with different rules and different skills. Many athletes today are versatile and can excel in several different sports, so being good at squash would not necessarily mean you would not have a good tennis swing-- it really depends on how much you practice.
It is called a swing.
Not very. Tennis is more swing than muscle
They jump into the wide open air and forcefully swing the racket down hard on the tennis ball.
A backhand swing in tennis is using either one or two hands on the opposite side of your dominant hand to hit the ball. For example, if you have a two-handed backhand and you are right handed, you would swing at the ball with two hands on your left side. Thus, your backhand swing is on your left side with two hands.
There are a number of online sources for videos of tennis serves. Some good places to look include YouTube, Active, Full Swing, Tennis Mindgame, and Optimum Tennis.
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