When you add more mass does the friction decrease or increase? (ON FLAT FLOOR)

Kinetic energy depends on ... A. Mass B. Speed (velocity) C. Both of the above D. none of the above

As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. The spacecraft's mass is 2,425 kg and the thrust (force) of the rocket engines is 385 N.

A sled weighing 300 N is moved at constant speed over a horizontal floor by a force of 50 N applied parallel to the floor determine the coefficient of friction between the sled and the floor

A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base is 260 m and the minimum diameter, 500 m above the base, is 220 m. Find an equation for the tower.

In creating products from trees, only half of the tree can be used

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

What are (a) the lowest frequency, (b) the second lowest frequency, (c) the third lowest frequency of transverse vibrations on a wire that is 10.0m long, has a mass of 100g, and is stretched under tension of 250 N?

Why is a rock salt crystal likely to shatter when struck

Find the speed required to throw a ball straight up and have it return 6 seconds later. neglect air resistance. how high does the ball go?

Do all electromagnetic waves travel at the speed of light, carry energy, and travel through a vacuum?