Does anyone know what type of collision occurs when a tennis ball hits a racket. Also predict the motion after the collision.
I talked about how elastic collision is shown when a ball hits a racket and bounces off of it.
but she said I was wrong. She didn't tell me why I was wrong but she’s making me redo it.
I have no idea what the correct answer is. Can someone please help me
Thank you 🙏
In the case of a tennis ball hitting a racket, the type of collision that occurs is typically an elastic collision. In an elastic collision, both momentum and kinetic energy are conserved.
During the collision, the tennis ball transfers some of its momentum and kinetic energy to the racket, and then rebounds off the racket. The motion after the collision depends on various factors such as the angle at which the ball hits the racket, the speed and direction of the racket, and the properties of the ball and racket materials.
If the collision is ideal and no other external forces are acting on the ball, it would typically bounce off the racket with the same speed but in the opposite direction. This is because an elastic collision conserves both momentum and kinetic energy.
However, it's important to note that in real-world situations, there are many factors that can affect the motion after the collision. These may include the non-ideal nature of the collision, friction, spin, air resistance, and other external forces. Therefore, the exact motion after the collision may vary.
If your teacher insists that the correct answer is not an elastic collision, it could be worthwhile to seek further clarification from her to understand why and what she expects as the correct answer.
It seems like you're looking for an explanation of the type of collision that occurs when a tennis ball hits a racket, as well as the predicted motion after the collision.
When a tennis ball hits a racket, the collision is typically classified as an inelastic collision. In an inelastic collision, the objects involved stick together or deform upon collision.
In the case of a tennis ball hitting a racket, the ball's kinetic energy is partly transferred to the racket. The ball may compress as it comes into contact with the racket surface, and some energy is dissipated as heat and sound. The ball and racket may briefly stay connected and move together for a short period.
After the collision, the combined ball and racket system could undergo various types of motion. It could rebound off the racket and bounce away, losing some energy. Alternatively, the ball and racket may move together in the same direction with a lower velocity due to the energy loss during the collision. The exact motion will depend on various factors, including the velocity, angle of impact, and the elasticity of the ball and racket.
In terms of why you were told your initial answer was wrong without any explanation, it's possible that the person who corrected you may have a different understanding or definition of the terms and concepts being used. It can be helpful to communicate and clarify any misunderstandings with your teacher or colleague to ensure you have a clear understanding moving forward.
From Google:
Image result for explain why a tennis ball struck by a racquet is inelastic
A tennis ball is relatively inelastic compared to a the strings of a tennis racquet. As a result, tennis balls lose energy to dissipative forces when they bounce due to friction between the ball and the court and deforming of the tennis ball itself.