A 100 kg roller coaster is at the peak of the first hill 75 m above ground. A second later it is at the bottom of the hill.
a. Create an LOL chart for the following situation. Ignore friction and energy loss.
b. How fast was the roller coaster moving?

Which instrument is used to measure air temperature

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j