Velma Is in a Train Headed North Past Mort at 30

question 89

Multiple Choice

Velma is in a train headed north past Mort at 30 m/s. Velma has a slingshot that can shoot pebbles at 40 m/s. Velma shoots a pebble toward the rear of the train. Velma observes the pebble's velocity to be

• A) 70 m/s south.
• B) 10 m/s south.
• C) 10 m/s north.
• D) 40 m/s south.
• E) 70 m/s north.

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