Asked by Jessy
A projectile is shot directly away from Earth's surface. Neglect the rotation of Earth.
(a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is one-fifth of the escape speed from Earth?
____ times RE
(b) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial kinetic energy is one-fourth of the kinetic energy required to escape Earth?
_____ timesRE
(c) What is the least initial mechanical energy required at launch if the projectile is to escape Earth?
P.S.Bobpursley, sorry,I don't really understand the last question you answered....
(a) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial speed is one-fifth of the escape speed from Earth?
____ times RE
(b) As a multiple of Earth's radius RE, what is the radial distance a projectile reaches if its initial kinetic energy is one-fourth of the kinetic energy required to escape Earth?
_____ timesRE
(c) What is the least initial mechanical energy required at launch if the projectile is to escape Earth?
P.S.Bobpursley, sorry,I don't really understand the last question you answered....
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