PLEASE HELP How much power is required for a pulley to accelerate a 2,000 kg rollercoaster 5 m/s² a distance of 150 meters up a hill in 30 seconds to a height of 100 meters? What is the rollercoaster's velocity as it races down the hill? Show your work

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.