Mars in a Minute: How Do Rovers Drive on Mars?

Assuming the mass of Earth to be ten times the mass of Mars, its radius to be twice the radius of Mars and the acceleration due to gravity on the surface of Earth is 10 m//s^(2) . Then the accelration due to gravity on the surface of Mars is given by

The mean diameters of Mars and Earth are 6.9 xx 10^3 km and 1.3 xx 10^4 km, respectively. The mass of Mars is 0.11 times Earth's mass. (a) What is the ratio of the mean density (mass per unit volume) of Mars to that of Earth? (b) What is the value of the gravitational acceleration on Mars? (c) What is the escape speed on Mars?

The mean distance of Mars from the sun in 1.524 times that of the Earth from the sun. Find the number of years requires for Mars make one revolution about the Sun.

Phobo is a satellite of Mars. The period of its revolution around Mars is 0.319 days and its mean distance from Mars is 9.519xx10^(6)m . Assuming that the mass of Phobos is negligible compared to that of Mars, calculate the mass of Mars. Take G=6.668xx10^(-11)Nm^(-2)kg^(-2)

A spaceship is stationed on Mars. How much energy must be expended on the spacesship to rocket it out of the solar system ? Mass of the spaceship 1000 kg, mass of the sun= 2xx10^(30) kg, mass of Mars= 6.4xx10^(23) kg, radius of Mars 3395 km, radius of the orbit of Mars = 2.28xx10^(8) Km, G= 6.67xx10^(-11)Nm^(2)Kg^(-2).

A rocket is fired vertically from the surface of Mars with a speed of 2kms^(-1) . If 20% of its initial energy is lost due to Martian atmospheric resistance, how far will the rocket go from the surface of Mars before returning to it? Mass of Mars =6.4xx10^(23)kg , radius of Mars =3395 km ,

A rocket is fired fired vertically from the surface of Mars with a speed of 2 Kms^(-1) . If 20% of its initial energy is lost due to martain atmospheric resistance, how far will the rocket go from the surface of Mars before returning to it ? Mass of Mars= 6.4xx10^(23) Kg, radius of Mars=3395 Km, G= 6.67xx10^(-11)Nm^(2)Kg^(-2) .

Study the following diagram and answer questions based on it How many people who like Mars like Jupiter also ?

The escape velocity on the surface of earth is 11.2 km/s. If earth has mass 9 times the mass of Mars and radius equal to twice the radius of Mars, calculate the minimum velocity required by a projectile to escape the gravitational field of Mars.

Talking the mass and radius of the earth as the units of mass and distance respectively, the mass of Mars turns out to be 0.107 unit and radius 0.53 units. What is the acceleration due to gravity on the Mar's surface? What will be the weight of a person on Mars if he weighs 98kg on earth.