When a projectile is released, why is there a change in speed in one dimension but not the other?(1 point)%0D%0AResponses%0D%0A%0D%0AThe force of gravity only acts in a downward direction.%0D%0AThe force of gravity only acts in a downward direction.%0D%0A%0D%0AA projectile only moves in two dimensions because it is thrown.%0D%0AA projectile only moves in two dimensions because it is thrown.%0D%0A%0D%0AA projectile only moves in one dimension.%0D%0AA projectile only moves in one dimension.%0D%0A%0D%0AThere can be only one force acting on an object at a time.
The force of gravity only acts in a downward direction.
The correct answer is: The force of gravity only acts in a downward direction.
To understand why there is a change in speed in one dimension but not the other when a projectile is released, we need to consider the forces acting on the projectile. In this case, the only force acting on the projectile is gravity. Gravity always acts downwards, regardless of the direction of the initial velocity of the projectile.
When a projectile is released, it initially has an initial velocity in a certain direction. However, gravity then starts to influence its motion. Gravity causes the projectile to accelerate downwards, thereby changing its speed in the vertical dimension. This is because the force of gravity acts in the same direction as the velocity vector of the projectile, causing it to increase in speed in that dimension.
On the other hand, in the horizontal dimension, there is no force acting on the projectile to change its speed. The only force at work is gravity, which acts vertically. Therefore, there is no change in speed in the horizontal dimension.
In summary, the change in speed in one dimension (vertical) but not the other (horizontal) when a projectile is released is due to the force of gravity acting only in a downward direction.