The weight of a person on the Earth is `80 kgwt`. What will be his weight on the Moon ? Mass of the Moon `= 7.34 xx 10^(22) kg`, radius `= 1.75 xx 10^(6) m` and gravitational constant `= 6.67 xx 10^(-11) N m^(2) kg^(-2)`. What will be the mass of the person at the Moon and acceleration due to gravity there ? If this person can jump `2 m` high on the Earth, how much high can he jump at the Moon ?