Select proper alternative and complete the following paragraph. (NASA, ISRO, Apollo-2, Stones , manned Luna 2 , ummanned , Chandrayaan-1 , USA, Soviet Union , India) The spacerafts in the Luna series sent by ……….. reached near the moon. ............ , launched in 1959 was first craft in this series . Till 1975, 15 spacecrafts were sent to moon, which made chemical analysis of the moon and also measured its gravity , density and radiations. Last four crafts even landed on the moon and brought the samples of ................. from the surface of the moon for analysis in the laboratories . America also executed moon missions in the duration of 1962 to 1972 . The speciality of these missions was that some of these were .......... missions . In July ,1969 , Neil Armstrong become the first human to step on the moon. In 2008 , ........... launched ............ and placed it into an orbit around the moon . It obtained useful information of moon for about a year.

The gravitational force on the surface of th Moon is _______ times than that on the surface of the Earth.

A man can jump on the moon ________times as high as on the earth.

Fill in the blanks : Chandrayaan -I discovered the presence of ……….on the moon

Solve the following examples / numerical problems: What will be the gravitational force on 60 kg man on the Moon,Mars and jupiter ? Are they the same ? why ? M (Moon) = 7.36xx10^22 kg, R (Moon)= 1.74 xx 10^6 m. M (Mars) = 6.4xx 10^23 kg, R (Mars) = 3.395 xx10^6 m, M (Jupiter)=1.9xx10^27 kg. R (Jupiter) = 7.15xx10^7m. G=6.67 xx10^-11 N-m^2 / kg^2.

Calculate the value of acceleration due to gravity on the surface of Mars if the radius of Mars = 3.4 xx 10^3 km and its mass is 6.4 xx 10^23 kg.

If p: The sun has set, q: The moon has risen, then symbolically the statement 'The sun has not set or the moon has not risen' is written as

Explain why one can jump higher on the surface of the Moon than that on the Earth.

The gravitational force on the surface of th moon is ____times than that on the surface of the Earth A. Five B. one fifth C. one sixth D. none

Find the odd man out: Moon, Sputnik, INSAT, Mars