Because of a sudden planet-quake, a 15 kg rock falls off the edge of a tall cliff on a planet with no atmosphere. The resulting vertical velocity of the object as a function of time is shown in the graph. Note that the graph starts at an arbitrary time during the rock's fall. Velocity as a function of time 6. -5 -10 -15 -20 -25 -30 -35 Time (s) What is the weight of the object on the surface of this planet? Write your answer using two significant figures. Is/w) kupoiaA

13. On a distant planet, an astronaut drops a steel ball from a height of 150 meters. He observes that it takes 10 seconds for the ball to reach the surface of the planet. The distance that the ball falls from the starting point is recorded with the instruments that he carries in his spaceship, with this, he generates the table shown below. Using the data provided, determine the gravitational acceleration corresponding to the planet the astronaut is on. Write the answer using two significant figures. Heigh m    // time seconds 0                     0 6                      2 24                    4 54                    6 96                    8 150                  10

5. A ball is thrown with an initial velocity of 8.5 m/s at an angle of 30.0⁰ from the horizontal. How long the ball is in flight? (assume g = 9.81 m/s²) 6. The planet A has a mass of 1.972-1024 kg and the planet B has a mass of 5.348-1024 kg. What is the distance between the planet A and planet B if the force of gravity between them is 2.111-1022 N?. (assume G = 6.670-10-¹¹ Nm²/kg²) 1770

(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

2-D star cluster puzzle Find the net gravitational force for v) A regular heptagon Let m=mass of the star = 1.99 x 10^30 kg, l=earth to star distance=149.6 x 10^6 km, G=6.67 x10^-11 N m^2/kg^2. Note that the masses of each star are the same. Also, it is advised to use vectors and components. And you can just find the gravitational net force of one of the stars in the shape

An astronaut of mass m experiences a weight of mg upon the surface of the moor of radius R. Identify the gravitational force exerted on the astronaut by the moon in orbit a distance of 3R above the surface of the moon.   A. 1/16 mg   B. 16mg   C. 1/9 mg   D. mg   E. (1/3)mg

On another planet whose radius is four times that of Earth and whose mass is three times that of Earth, your weight on this planet is times your weight on Earth. Hint: What equation should you use to answer this question? Recall in Ch. 4 the calculation of the magnitude of g. A. 1/16 = 0.0625 B. 3/16 0.1875 C. 3/4 0.750 D. 9/16 0.5625 E. 4/3 = 1.333 F. 3 A B C D E LL F

A planet was discovered which is twice as massive as Earth and has twice Earth's radius. How does the value of the gravitational field strength on the surface of that planet compare to the value of the gravitational field strength on the surface of Earth (gEarth)?   1/2gEarth 1/8gEarth gEarth 1/4gEarth 2gEarth 4 g Earth

4. Astronomers use a telescope to watch a small moon orbit a planet in our solar system. They find that it takes the moon 14 days to go around the planet once, and they estimate the radius of the moon's orbit is about 4.2 x 10² meters. a. From this information, estimate the mass of the planet. b. Using the mass you found in part (a), estimate the free-fall acceleration on the planet's surface if it has a radius of 3.8 x 106 meters.

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