Question

A small ball rolls horizontally off the edge of a tabletop. What is the horizontal velocity of the ball just before it hits the ground?

A) 0 m/s
B) 9.8 m/s
C) 2 m/s
D) 4.9 m/s

Answer 1

The horizontal velocity of the ball just before it hits the ground is 2 m/s.

Step-by-step explanation:

The horizontal velocity of the ball just before it hits the ground is 2 m/s. The horizontal velocity of a projectile remains constant throughout its motion, as long as there are no external forces acting on it. In this case, since the ball rolls horizontally off the edge of the tabletop, there is no vertical component of the velocity, only a horizontal component.