# If we throw a ball with initial velocity v0, is there a force?

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• annamal
In summary, when throwing a ball with initial velocity v0 and ignoring air resistance, there is no force in the x direction as the value of v0x remains constant during the flight. However, there is a force in the y direction due to gravity. The direction of the force is downwards, causing the ball to fall straight down.
annamal
If we throw a ball with initial velocity v0, and the ball progresses in a projectile motion, ignoring air resistance, will there be a force in the x direction? If so, what is that force in the x direction's value mathematically? I know there is a force in the y direction due to gravity.

No force exists in the x direction, as the value of v0x remains the same during the flight (no acceleration).

annamal said:
If we throw a ball with initial velocity v0, and the ball progresses in a projectile motion, ignoring air resistance, will there be a force in the x direction? If so, what is that force in the x direction's value mathematically?
More critically, what would be the direction of such a force?

annamal said:
If we throw a ball with initial velocity v0
That's not much of a "throw". You are just releasing the ball, which will fall straight down.

## 1. What is the relationship between initial velocity and force when throwing a ball?

The initial velocity of a ball is directly related to the force applied to it. The greater the initial velocity, the greater the force needed to achieve that velocity.

## 2. How does air resistance affect the force on a ball when thrown?

Air resistance acts in the opposite direction of the ball's motion and can decrease the force on the ball. This is why a ball thrown in a vacuum will travel farther than a ball thrown in the presence of air.

## 3. Is there a difference in force when throwing a heavier ball with the same initial velocity as a lighter ball?

Yes, the force needed to throw a heavier ball with the same initial velocity will be greater than the force needed to throw a lighter ball. This is due to the greater mass of the heavier ball.

## 4. Can the force on a ball change after it has been thrown?

Yes, the force on a ball can change after it has been thrown due to external factors such as air resistance, gravity, and collisions with other objects.

## 5. How does the angle of release affect the force on a thrown ball?

The angle of release can affect the force on a thrown ball. A ball thrown at a higher angle will have a greater force in the vertical direction due to the force of gravity, while a ball thrown at a lower angle will have a greater force in the horizontal direction.

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