Answers

The Brainliest Answer!
2015-10-17T23:12:14+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Escape velocity = √(2GM/R)
escape velocity is proportional to √(M/R)

If radius is double and mass is 8 times,
√8M/2R = √4M/R = 2√M/R
So escape velocity of planet is 2 times the escape velocity of earth

V = 2*11.2 = 22.4 km/s
2 5 2