The escape velocity of projectile on the surface of earth is 11.2 Kms^(-1). If a body is projected out with thrice of this speed , find the speed of the body far away from the earth . Ignore the presence of other planets and sun.

The escape velocity of projectile on the surface of earth is 11.2 Kms^

1.	The escape velocity of projectile on the surface of earth is 11.2 Kms^(-1). If a body is projected out with thrice of this speed , find the speed of the body far away from the earth . Ignore the presence of other planets and sun.
Answer» Solution :`V=SQRT(v_p^2-v_e^2)=sqrt((3V_e)^(2)-v_(e)^(2))=sqrt8xx11.2 = 31.68kms^(-1)`.