Some molecules move with speeds approaching the "escape velocity" from Earth, which is 7.0 miles per second. What is this speed in cm/h? (1 mi = 1609 m)

Question

Quizplus · Accepted Answer

First, let's convert the escape velocity from miles per second to centimeters per hour:
7.0 miles/s x 1609 m/mile x 100 cm/m x 3600 s/h = 4.1 x 10^19 cm/h

Therefore, the correct answer is C, 4.1 × 10^19 cm/h.

Some Molecules Move with Speeds Approaching the "Escape Velocity" from Earth