A roller coaster with people on board has a total mass of 4500 kg and starts at a height of 22 meters with a speed of 2.0 m/s. 50 kJ of work is done by friction on the way to the bottom of the ride. What is the speed at the bottom of the ride?

1) Which of the following best explains the difference between climate and weather as it relates to the temperature, precipitation ete, in an area of the world?

what are two systems that work with the muscel system

If one of the masses of the Atwood's machine below is 3.2 kg, what should be the other mass so that the displacement of either mass during the first second following release is 0.23 m? Assume a massless, frictionless pulley and a massless string

When is acceleration the greatest on a graph

Anions are formed by

Describe the energy transfer when you touch a block of ice with your hand

1: Explain how insurance transfers risk to a third party.

How do you find period when you have frequency

Which electromagnetic waves have a higher frequency than visible light

Calculate the speed for a car that went a distance of 125 miles in 2 hours time