The picture illustrates the horizontal and vertical components of velocity of a

Question

The picture illustrates the horizontal and vertical components of velocity of a projectile (such as a cannonball).

Ignoring air resistance, the forces acting on a projectile, once it is in the air obey the following pattern:

Select one:

a. There is a constant force in the x-direction and a changing force in the y-direction.

b. There is no force acting in the x-direction, so there is a constant x-velocity. There is a constant gravitational force in the negative y-direction accelerating the projectile downward.

c. During the first half of the journey, the vertical component of force is upward. In the second half of the journey, the vertical component of force acts downward. There no horizontal component of force.

d. There is a constant force in the horizontal positive x-direction accelerating the projectile. There is no force acting in the y-direction (because we are ignoring air resistance).

The picture illustrates the horizontal and vertical components of velocity of a projectile (such as a cannonball).

Ignoring air resistance, the forces acting on a projectile, once it is in the air obey the following pattern:

Explanation / Answer

b) There is no force acting in the x-direction, so there is a constant x-velocity. There is a constant gravitational force in the negative y-direction accelerating the projectile downward.

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