A marble rolls off of a horizontal table with a speed of 1.0 m/s. 2 seconds later, its vertical velocity is

A marble rolls off of a horizontal table with a speed of 1.0 m/s. 2 seconds later, its vertical velocity is:

a. This cannot be determined

b. Downward at 9.8 m/s

c. Downward at 1.0 m/s

d. Downward at 19.6 m/s

e. Downward at 5.9 m/s

the ball has no initial vertical velocity, so its vertical velocity after it leaves the table will be exactly the same as if it had been dropped

since gravity accelerates falling objects at the rate of 9.8m/s/s, after 2s, the ball will be traveling at 2s x 9.8m/s/s = 19.6m/s downward

on the other hand, this will be one tall table if the ball hasn't yet hit the ground (the table would have to be at least 19.6m high)