[Solved] To a Ground-Based Observer, What Is the Speed of a Moving

Question 12
Multiple Choice

To a ground-based observer, what is the speed of a moving ball tossed backward at 30 km/hour on a train moving forward at 90 km/hr?

A) 150 km/hr
B) 60 km/hr
C) 30 km/hr
D) 90 km/hr
E) 2700 km/hr

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