Author Question: A ball rolls over the edge of a table with a horizontal velocity v m/s. The height of the table is ... (Read 140 times)

james9437 · **on:** Jul 29, 2018

A ball rolls over the edge of a table with a horizontal velocity v m/s. The height of the table is 1.6 m and the horizontal range of the ball from the base of the table is 20 m.

What is the horizontal velocity of the ball just before it touches the ground? A) 35 m/s
B) 9.8 m/s
C) 20 m/s
D) 4.9 m/s
E) 70 m/s

Question 2

A 4.0-C charge is situated at the origin of an xy-coordinate system. What is the potential difference between a point x = 4.0 m and y = -4.0 m because of this charge?

A) 18 103 V
B) -18 103 V
C) 0 V
D) 36 103 V
E) -36 103 V