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Gravity : The force that brings you back to the ground when you jump, the bigger the object or the more mass it has makes it fall back to the ground quicker

Friction on the court

when you are on the court friction can be handy for quick stop but not for when you need to run for the ball. in tennis being able to stop quickly is very good because you can easy stop and retain balance

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1. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

2. Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Forces In Action During Tennis

3. For every action there is an equal and opposite reaction.

Friction On The Racquet

Friction between the ball and the strings is important. If there is no friction between the ball and the string it is very difficult to create spin.adding spin to the ball can help it stop air resistance. Mainly top spin is used to increase the speed of the ball and help it fall back to the ground quicker.

Air Resistance: Air resistance is the air pushing you forward or backwards, if the air is pushing you backward you need more force to move forward but if it is pushing you forward you need less force to move

By Nathan

Friction: Friction is the force that acts in the opposite direction to stop objects in motion

In tennis while serving there are five forces at work: pushing, inertia, friction, acceleration and gravity. When you throw the ball into the air it keeps moving because of inertia until gravity pulls it back down. When the ball is at its highest point you hit it, when you hit it you are pushing the ball forward. while the ball is flying through the sky it is affected by the air resistance and gravity, the air is pushing the ball backwards and gravity is pulling it down

When serving or hitting the ball, the ball accelerates (change of speed and direction) at different speeds and spin depending on how much you slice or how hard you hit the ball with the racquet.

Inertia: Inertia keeps an object in motion or still, until another force is applied to stop it or make it start moving

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