In tennis, how much effort does it take to send a strong downspin ball?

In fact, the control of the face is far more important than the strength.

"Tennis underspin, topspin, flat shot, volley, short ball, high ball characteristics, essentials and playing style.

The powerful topspin is also very effective against opponents who have a defective shot. Cause? It's painful if the opponent can only hit the ball at their right hip height, with a high bounce and strong topspin, keeping them away from their own area of good hitting or Jane.

Even a strong, one-handed backhand player like Federer is struggling with the timing and striking of Nadal's dreaded topspin. When the mighty Federer misses the shot, or doesn't hit the sweet spot in the middle of the racket, the return is often weak, and Nadal takes advantage of the situation to score.

Even the world's best players sometimes hit the ball too shallowly. This type of ball is often attacked by the opponent, who plays the winning ball with a pressing shot or puts a small ball in the ball or catches the winning ball close to the winning ball. The topspin ball, on the other hand, even if it lands near the tee line – all else being equal, it bounces deeper than both flat and downspin, so topspin is the least vulnerable if the ball is at the same speed.

Playing in a tailwind environment will have a great advantage as you will be hitting the ball faster than usual and your opponent will be slower in the upwind. But there is a question of how to control the extra power. Many careless players will shine too hard, causing the shot to stay away from the baseline and sideline.

The reason why the topspin ball brings us so much value is because it is variable, that is, versatile. For example, when you're downwind, you can use more topspin to control your power, while when upwind, you can reduce spin to increase power. When playing the cross-ball, you can decide how much power and spin you want to use to cross the ball based on the position of your opponent in front of the net, the range of control, and the agility of the opponent.

When returning, you can adjust the height of the topspin ball to get more time back. When you're on the net, you can reduce topspin and lower the height of the net to achieve the depth and attack power you need. In a stalemate, you can subtly change the power and spin of the ball to disrupt your opponent's rhythm and timing of your shots.

Finally, at the end of the clay season, you can adjust the topspin again depending on the type of court and some conditions (e.g., ball, elevation, climate).

Tennis is easier to play topspin, playing topspin can not only hit the ball, but also does not affect the force, the base roll and hidden section and can also reduce the mistakes in the batting process, so everyone prefers this style of play.

Because the topspin ball can change its trajectory during its operation. Caught the other party off guard and didn't know that he was going to hit **.

This is because this way of playing is more efficient, more convenient, more acceptable, can score better, and is easier to control the situation on the court.

When the fluid flow rate is faster.

The pressure is smaller.

When the fluid flow rate is slower.

The greater the pressure.

For downspin balls, the velocity direction of the lower point of the sphere is the same as that of the ball as a whole, and the direction of the air flow is opposite, and the situation is opposite of the above situation at the top of the sphere. In this way, the air flow under the ball is greater relative to the velocity of the ball, so the gas pressure under the ball is less. Hence the creation of the underspin ball.

For topspin balls, the velocity direction of the upper point of the sphere is the same as that of the ball as a whole, opposite to the direction of the air flow, and the lower point of the sphere is the opposite of the above. In this way, the air flow above the ball is greater relative to the velocity of the ball, so the pressure of the gas above the ball is less. Hence the topspin ball.