The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h?
A)65,500 mi/h
B)25,300 mi/h
C)18,200 mi/h
D)1,090 mi/h
E)5.02 × 10−3 mi/h

Question

Quizplus · Accepted Answer

To convert km/s to mi/h, we can use the following conversions:
1 km = 0.621371 mi
1 h = 3600 s

Therefore, 11.3 km/s can be converted as follows:
11.3 km/s * (0.621371 mi/km) * (3600 s/h) = 25,314 mi/h

The closest option to this answer is B) 25,300 mi/h.

The Speed Needed to Escape the Pull of Earth's Gravity