How does the vertical acceleration at point a compare to the vertical acceleration at point c?

Both accelerations are equal to free-fall acceleration.

Further explanationThis is a matter of projectile motion, i.e., an object moving in two dimensions. The shaped is called a parabola.The only forces acting during its flight are gravity and friction. In many situations, air resistance can be ignored.It is moving horizontally and vertically at the same time but recalls this, the horizontal dan vertical components of the motion are independent of one another. Assuming the gravitational force is constant.

Horizontal component

There are no forces in the horizontal direction, so there is no horizontal acceleration, i.e., a = 0 m/s². This means the horizontal velocity must be constant along the track.

Vertical component

There is naturally a constant vertical force acting down, so there is a constant vertical acceleration. The value of vertical acceleration is similar to gravity (g).

See the attachment for the motion diagram.

Therefore the vertical acceleration at point A and point B is the same as free-fall acceleration.

Learn moreDetermine the acceleration of the stuffed bear Particle's speed and direction of motion The energy density of the stored energy  

Keywords: the motion diagram, showing the trajectory, projectile motion, parabola, horizontal, vertical component, gravity, how does the vertical acceleration at point A, compare, point C, equal to free-fall acceleration

an electrically neutral object contains the same amount of positive charge as negative charge, resulting in no net charge. typically, this means the same number of protons and electrons.