Gravity pulls downward on a rock with a force of 800 N. If you pull upward on the rock with a force of 400 N, what is the total force acting on the rock?

A. 400 N downward

B. 400 N upward

C. 1200 N downward

D. 1200 N upward

Give two examples of work being done on a baseball

The centers of two15.0-kilogram spheres are separated by 3.00 meters. The magnitude of the gravitational force between the two spheres is approximately?

If the kinetic energy possessed by a man of 50kg is 625J, the speed of man is

The book slides from you to beth and then from beth to carlos, along the lines connecting these people. what is the work done by friction during this displacement?

Galileo galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to systematically observe the skies with a telescope.

Calculate the gravitational potential energy of a 10kg box on the top shelf of a closet, 2m above the floor

In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite

On october 15, 2001, a planet was discovered orbiting around the star hd 68988. its orbital distance was measured to be 10.5 million kilometers from the center of the star, and its orbital period was estimated at 6.3 days.

A container of rocks with a mass of 65.0 kilograms is brought back from the moon's surface where the acceleration due to gravity is 1.62 meters per second2. what is the weight of the container of rocks on earth's surface?

A curved, transparent object used to refract light