A planet is orbiting a star when the star’s gravity suddenly vanishes. The planet then obeys Newton’s First law and heads outward along a straight line. Is Kepler’s second law still obeyed? That...

A planet is orbiting a star when the star’s gravity suddenly vanishes. The planet then obeys Newton’s First law and heads outward along a straight line. Is Kepler’s second law still obeyed? That...

2. A 222 kg weather rocket reaches its maximum height 32 km above the Earth's surface. Determine: a)The amount of gravitational potential energy at its maximum height. b) Its speed when it...

Planet X has three Earth's mass and twice times Earth's radius. The magnitude of the gravitational field near Planet X's surface is most nearly... a. 2 m/s^2 b. 7 m/s^2 c...

In a certain binary star system, the masses of the two stars are equal. They revolve in a circular orbit around a center of mass midway between them. The orbital speed of each star is 2.8 x 10^5 m/s...

Using the force of gravity, centripetal force, and normal force; why does an astronaut on a space station appear to be weightless?

its about gravity and space

Force of gravity acting on a free falling body of mass 1kg?

This is question of gravity

A Student moves a box of books with a rope by pulling the rope with a force of 90 N at an angle of 30°. The books have a mass of 20 kg and a coefficient of friction between the box...

An astronaut has a mass of 80 kg, but on an unknown planet, the bathroom scale reads 15 kg when the astronaut stands on it. What is the astronaut's weight and the gravitational field strength on the...

A man stands before a train. We noticed that after 2 seconds the first wagon has passed. How many seconds are needed for the 16th wagon to pass? The speed is constant

Their apparent weight is zero. They are above the earth’s atmosphere. The gravity of the earth and the sun are directed opposite each other, so there is no net gravitational force. They...

microbiology: hi, my question is if we grow microbial culture in a liquid media in a cylindrical bottle of 100 ml capacity, with 40 ml inoculated liquid media and then capped, and this was set...

A cart full of packages weighing 180 pounds is rolling down a ramp 12 feet long at an incline of 25° (the force applied by gravity is equal to the weight of the package). Find the work done by gravity...

Always store heavier items in lower shelves

When lifting any items from floor, always bend your back and don’t bend your knees?

Gravitational force question

You throw a ball from 2 meters up in the air at a velocity of 16 m/s. How long will it take for the ball to hit the ground?Grav

Mars has a mass of 6.4 × 1023 kg. It has a moon named Phobos with a mass of 1.07 × 1016 kg. a. If their centers are 9400 km apart, what is the force of gravity acting on Phobos? b...

physics