Which of the following quantities are zero for a projectile during its entire flight?Select all that are true. x y ay vy ax vx r v

The quantities that are zero for a projectile during its entire flight are:

1. ax: The acceleration in the x-direction (horizontal direction) is zero because there are no forces acting on the projectile in the horizontal direction (assuming air resistance is negligible).

All other quantities (x, y, ay, vy, vx, r, v) are not zero for a projectile during its entire flight.

• x and y: These represent the horizontal and vertical positions of the projectile, respectively. These values change as the projectile moves.
• ay: This is the acceleration in the y-direction (vertical direction). It is equal to the acceleration due to gravity, which is not zero.
• vy and vx: These represent the vertical and horizontal components of the velocity, respectively. These values change as the projectile moves.
• r: This is the range of the projectile, which is the horizontal distance it travels. This is not zero unless the projectile is fired straight up.
• v: This is the magnitude of the velocity, which changes as the projectile moves (except in the ideal case of no air resistance, where it would be constant).