For the following questions consider the diagram respresentimg a potion of an amusement park ride assume a 100kg car has 30,000 or potential energy at point a it moves down a frictionless track and comes to a stop as it compresses a huge spring at point D. Calculate how much kinetic energy the car has at point c.
How fast is the car moving? show work

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not

Current vs. forcewhat type of relationship does this graph show?