A ball thrown horizontally at vi = 20.0 m/s travels a horizontal distance of d = 57.0 m before hitting the ground. From what height h was the ball thrown?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

What causes the development of most clouds and precipitation in the atmosphere?

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy