Velocity is the speed of something in a given direction. The velocity of the serve is created by how fast the racket is able to accelerate to the ball, and how energy is transferred to the ball. As your racket comes in contact with the ball, having a forceful internal rotation of your shoulder helps create a bigger racket velocity in your serve.
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.
More Tennis Ball Velocity images
A tennis ball is thrown straight up into the air with an initial velocity of 11.3 m/s. How high does the tennis ball travel? The only force acting on the ball is the acceleration due to gravity which will be -9.81 m/s^2
V = velocity of ball, variable A = 0.0012566 m^2 (area of ball) (not surface area) m = 0.0027 kg (mass of ball) When simplified this yields: a = 0.143 V^2 If Velocity = a * time, then the change in velocity (if negative) would be: V subsequent = V initial - [(0.143 * V initial 2) * time]
Whenever a tennis racquet hits a ball, Newton's Second Law, F ⇀ = m a ⇀ \vecF=m\veca, which relates the external force on object to the object's resulting acceleration, determines the resulting acceleration of the ball due to the force of the racquet on the ball. In addition, Newton's Third Law informs us that that the force exerted by the ball on the racquet is equal in magnitude and opposite in direction to the force exerted on the racquet by the ball.
One hundred twenty-eight shots were measured for the new tennis balls. The velocity range was 14 m/s to 30 m/s and the spin range was -2400 rpm (backspin) to 2500 rpm (topspin); the range of C D was 0.453 to 0.567.
Therefore the vertical velocity before the ball is hit it 2.1m/s [DWN] Now that we have this information, we can use the same steps as we did to find the horizontal acceleration: Therefore the vertical acceleration is 1.9x10^3 m/s [UP]
In this situation, representative values of the following are used in equation (4): V A = 65 m/s m A = 0.058 kg I B = 0.04 kg·m 2 w B = 0 rad/s e = 0.5 As shown in Case 1, the best spot to hit an oncoming ball to get the highest rebound velocity of the ball is somewhere in the middle of the racket.