A car starts down a 22.0 m hill on a roller coaster with a speed of 3.0 m/s. It rolls down to a height of 2.0 m where it enters a loop with a 10.0 meter radius. Given that no
nonconservative forces are at work here, the speed of the car at the top of the loop will be?

Explanation:

A 0.500 kg block is attached to a unstretched spring on a frictionless plane along the horizontal, and whose force constant is 100 N/m .  A 100 gram play dough ball is rolled with a speed of 6.00 m/s and sticks.  How far does the dough-block system compress the spring?

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

prolly a beacuse the momentuem the car has increases while going down hill