Understanding the Physics
* Gravity: The only force acting on the ball after it's hit is gravity. Gravity pulls objects downward, giving them a constant acceleration of approximately 9.8 m/s² (meters per second squared).
* Constant Acceleration: This means the ball's downward velocity increases by 9.8 m/s every second.
* Initial Velocity: The ball's initial velocity is the speed at which it was hit upward. However, this doesn't change the acceleration due to gravity.
The Answer
* Regardless of the initial velocity or time passed, the acceleration of the sepaktakraw ball after 1 second (or any time during its flight) will always be approximately 9.8 m/s² downwards.
Important Note: This assumes we are neglecting air resistance. In reality, air resistance would slightly oppose the ball's motion, but its effect is usually small for a relatively light object like a sepaktakraw ball.