- #1
adr147
- 35
- 0
Physics question help required. Can a pool ball come off a cushion faster than it hits it? - something in my distant memory tells me this breaks one of Newtons laws or something like that.
adr147 said:Physics question help required. Can a pool ball come off a cushion faster than it hits it? - something in my distant memory tells me this breaks one of Newtons laws or something like that.
adr147 said:Where does the extra energy come from?
adr147 said:I see, now is that a theoretical possibility or does it actual happen in practice?
Yes, it is possible for a pool ball to come off a cushion faster than it hits it. This phenomenon is known as "rebound velocity" and depends on various factors such as the angle of incidence, the elasticity of the cushion, and the speed and spin of the ball.
The rebound velocity of a pool ball is determined by the angle of incidence, the elasticity of the cushion, and the speed and spin of the ball. These factors all play a role in how much energy is transferred from the ball to the cushion and back to the ball.
No, a pool ball cannot come off a cushion faster than the initial speed it was hit with. The maximum rebound velocity of a pool ball is equal to the initial speed it was hit with. This is due to the conservation of energy principle.
Spin can greatly affect the rebound velocity of a pool ball. When a ball is hit with topspin, it will have a higher rebound velocity as the spin transfers energy to the cushion. Conversely, backspin will result in a lower rebound velocity as the spin absorbs energy from the cushion.
Yes, there is a limit to how fast a pool ball can come off a cushion. This limit is determined by the initial speed of the ball, the elasticity of the cushion, and the angle of incidence. If the ball is hit too hard or at too steep of an angle, it may not rebound at all and simply roll along the cushion.