Velma is in a train moving eastward at 20 m/s. She throws a ball ...

[sc00by25]

Velma is in a train moving eastward at 20 m/s. She throws a ball toward the rear of the train, throwing it at her normal throwing speed of 20 m/s. What is Mort's observation, regarding the ball?
 
  A) It moves westward at 20 m/s.
  B) It moves eastward at the same speed of the train, just keeping up with the train.
  C) It moves westward at 40 m/s.
  D) It moves eastward at 40 m/s.
  E) It falls straight down.

Question 2

Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?
 
  A) 2T B) T/2 C) T/ D) T E) T

[bhavsar]

Answer to Question 1

E

Answer to Question 2

E

[sc00by25]

Excellent

[kjohnson]

Gracias!