Question

Why horizontal acceleration is zero in projectile motion?

Answer 1

The horizontal acceleration of projectile is zero because there are no forces along horizontal axis.

Explanation:

According to Newton’s second law, if a force is applied on an object then an acceleration is produced in the direction of force.  

F = ma  

Where “m” is mass and “a” is the acceleration of the object.

As, there is no force along horizontal axis, acceleration will also be zero.