1. Define the term *escape speed*.
(1) Define the term *escape speed*.
(2) The Sun emits charged particles (mostly electrons and protons) from its equatorial regions, in what is referred to as its slow solar wind, at an initial speed of 400 kms−1 . By first determining the escape speed of the Sun (of mass 2×1030 kg and radius 7.0×108 m), suggest whether the slow solar wind particles can escape from the solar system. ( G=6.67×10−11 Nm2kg−2 )