Some space invaders build a giant gun on the surface oftheir planet. After wandering the planet, they find thatthe planet has a radius of 8.62x107m, and after a simplefreefall experiment, they calculate the mean massdensity to be 5650kg/m³. (a) What must the muzzlevelocity for the projectile to escape the planet'sgravitation when fired perpendicular to the horizon? (b)What is the speed of the projectile after it has traveled adistance of 9.45x106m?

we are finding Mass first ,then we calculate the part a question :

density to be 5650kg/m³. (a) What must the muzzle velocity for the projectile to escape the planet's gravitation when fired perpendicular to the horizon? (b) What is the speed of the projectile after it has traveled a distance of 9.45x106m?

density to be 5650kg/m³. (a) What must the muzzle velocity for the projectile to escape the planet's gravitation when fired perpendicular to the horizon? (b) What is the speed of the projectile after it has traveled a distance of 9.45x106m?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with. 

Question

Some space invaders build a giant gun on the surface of
their planet. After wandering the planet, they find that
the planet has a radius of 8.62x107m, and after a simple
freefall experiment, they calculate the mean mass
density to be 5650kg/m³. (a) What must the muzzle
velocity for the projectile to escape the planet's
gravitation when fired perpendicular to the horizon? (b)
What is the speed of the projectile after it has traveled a
distance of 9.45x106m?

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