The mass of a planet X is 4.23x1024 kg and its radius is 7.24x106 m. Find the acceleration of gravity on the surface of this planet. 5.40 m/s2 4.93 m/s2 8.96 m/s2 8.70 m/s2

a. What is the difference between the force in F = ma (Newton's 2nd law) and F= Gm₁m₂/d² (Newton's law of universal gravitation). b. Find the net force on a Planet A of mass 3.0 x 101⁹ kg due to the gravitational attraction of both Planet B of mass 4.9 x 102⁰ kg and the Sun of mass 2.1 x 103⁰ kg, assuming they are at right angles to each other. The distance of Planet A from Planet B is 5.0 x 107 m and distance of the Sun from the Planet A is 5.8 x 106 m. G= 6.67 x 10-1¹ N.m²/kg². |

An object is hovering about the surface of the earth. It begins to experience a gravitational acceleration of 2.0 m/s2. How high is it above the surface of the earth?

(a) What is the acceleration (in m/s2) of gravity on the surface of the moon? m/s2 (b) What is the acceleration (in m/s2) of gravity on the surface (or outer limit) of Mars? The mass of Mars is 6.42 × 1023 kg and its radius is 3.37 x 106 m. m/s2

At what distance above the surface of the earth is the acceleration due to the earth's gravity 0.665 m/s2m/s2 if the acceleration due to gravity at the surface has magnitude 9.80 m/s2?m/s2? Express your answer in meters.

There is a gravitational force of 15.0 N between two objects. If the mass of each object is tripled, what would be the gravitational force between the objects? A 5 N 15 N C 45 N D 135 N O O O O

An asteroid starts at rest infinitely far from an Unknown planet. The asteroid has a mass of 5.00×104 kg. The mass of the planet, and the radius of the planet are given below. MAsteroid= 5.00x104 kg MPlanet-8.60x1025 kg Rplanet= 2.50x107 m What is final velocity when the asteroid hits the planet? 4.3 m/s 9180 m/s 5050 m/s 21400 m/s 1.15 x 103 m/s

The gravitational acceleration on a planet's surface is 17.0 m/s2.  What is the gravitational acceleration at a point where you were 2.50 times the planet's radius above the surface of the planet?

A planet has a mass of 6.78 × 1023 kg and a radius of 3.16 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 74.2-kg person weigh on this planet?

A 100 lb astronaut goes to planet X with mass 7 times the mass of earth and radius 8 times the earth's radius. What is his weight on planet X? 140 lbs O 12.5 lbs 10.9 Ibs 80 lbs 87.5 lbs