Emojis from @Cheasty
I accept your surrender.
itâs just getting sad now pal.
Youâd have been as well off listening to this
Great Comical Ali vibes here from Esteban.
I did Physics for the Leaving and struggled to get a C. I blame the teacher Brother Harkin.
Consequently I can offer no opinion as to whether it is topspin or backspin.
3 Likes
itâs called the magnus effect.
Youâre no mastermind anyway.
At least Iâm not a bullshitter.
Itâs obviously backspin, as the spin is backwards. Topspin would be forward spin.
I think the time has more than come for you to pass on this question. It definitely isnât part of your specialist subject.
I mean the panels on the ball appearing to travel downwards rather than upwards would be the rather simple giveaway that backspin was placed on the ball rather than topspin - never mind the height Thiago brought his foot to in order to slice downward through the ball, but sure you know better, or something.
a ball cannot physically be driven downwards with backspin. the laws of physics are in my favour.
Youâre assuming the initial hit is horizontal only
Iâm looking at the flight of the ball. It cannot be driven down that way with backspin, backspin causes loft. Itâs the laws of physics
I hate to break this to you, buddy, but if itâs off the ground, eh, yes it can.
Much harder to do the ball if is on the ground alright. I havenât yet seen a player perfect the rabbit hole technique where they drive the ball under the ground in a tunnelling fashion.
Youâre giving the rabbit hole technique a great go here though.
We really need a poll here.
He cuts down on the ball like a tennis player delivering a sliced backhand, but accelerates through it in an incredible way to make the ball arrow towards goal at pace. Outstanding goal.
Itâs backspin all the way for me, Clive.
5 Likes
- Backspin
- Topspin
0 voters
1 Like
Topspin:
Img Src: http://twu.tennis-warehouse.com/learning_center/aerodynamics2.php
To hit a ball with topspin, a player rotates the head of the racquet over the top of the ball during the hit. This exerts a torque about the center of the ball that causes the ball to rotate with a forward spin during its flight. As the diagram above shows, topspin is characterized by the tangential velocity of the top of the ball pointing in the same direction as the trajectory of the ball.
Hitting a ball with topspin causes a Magnus force to act on the ball perpendicular to the velocity of the ball in the downward direction. Because there is an additional downward force on the ball, tennis players can hit the ball with a greater speed and have it land in the court, if they apply topspin to the ball when hitting it. In addition, balls can be hit higher above the net, making the shot more difficult to return, because the addition downward force pulls the ball downwards. This also results in a higher bounce for the ball.
Underspin (Backspin):
To hit a ball with underspin, or backspin, a player angles his racquet back and slides it underneath the ball when hitting it. This type of shot is called a slice. It exerts a torque about the center of the ball that causes the ball to rotate with a backward spin during its flight. As the diagram above shows, underspin is characterized by the tangential velocity of the top of the ball pointing in the opposite direction as the trajectory of the ball.
Hitting a ball with topspin causes a Magnus force to act on the ball perpendicular to the velocity of the ball in the upward direction. Because there is an additional upward force on the ball, the ball seems to âfloatâ through the air as it flies. Slice shots are thus generally hit low over then net and with a relatively slow speed, in order to keep them from going out of the bounds of the court. This results in the lower bounce for the ball. In addition, slicing the ball allows the player to hit the ball to a precise location in the opponents court. However, due to the way slice shots are hit, if a player attempts to slice a ball that is moving to fast, or hit a slice shot too hard, he or she can easily hit the ball out of bounds.
Source : [1]
Ya thanks for confirming itâs backspin
1 Like
- The aerodynamic laws of flight in Physics
- Cheasty
0 voters
He gets over the ball though. Thatâs why Iâd say itâs topspin.