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?

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong