An object of mass 10 kg is released at point a, slides to the bottom of the 30º incline, then collides with a horizontal massless spring, compressing it a maximum distance of 0.75 m. (see below.) the spring constant is 500 n/m, the height of the incline is 2.0 m, and the horizontal surface is frictionless. what is the speed of the object at the bottom of the incline?

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices