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
Correct Answer:
Verified
Correct Answer:
Verified
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