Two billiard balls have velocities of 2.0 m/s and -1.0 m/s when ...

[Melani1276]

Two billiard balls have velocities of 2.0 m/s and -1.0 m/s when they meet in an elastic head-on collision. What is the final velocity of the second ball after collision?
 a. +2.0 m/s
  c. -0.5 m/s
  b. -1.0 m/s
  d. +1.0 m/s

Question 2

A charge Q accumulates on the hollow metallic dome, of radius R, of a Van de Graaff generator. A probe measures the electric field strength at various points outside the sphere surface. If the probe is initially at a distance 3R from the sphere's center and then is moved to 5R, by what factor will the electric field reading change?
 a. 3/5
  c. 5/3
  b. (5/3)2
  d. (3/5)2

[guyanai]

Answer to Question 1

A

Answer to Question 2

D

[Melani1276]

Both answers were spot on, thank you once again

[guyanai]

Great! Please up vote