Calculate the escape velocity of a satellite launched from the earth’s surface if the radius of the earth is 6.4×106m
-
A.
25.3kms-1 -
B.
4.2kms-1 -
C.
4.0kms-1 -
D.
11.3kms-1
Correct Answer: Option D
Explanation
Vescape = (sqrt{2gR})
Vescape = (sqrt{2times10times6.4times10^6})
Vescape = (sqrt{128000000})
Vescape = 11313.7085mS-1
Vescape = 11.313kmS-1
There is an explanation video available below.