HELP PLEASE A 0.5 kilogram cart on a frictionless track is moving at 3.0 meters per second at position A in the diagram below.

Calculate the gravitational potential energy of the cart at position A.
(.5kg)(9.81m/s^2)(1.5m)= 7 J

Determine the kinetic energy of the cart when it reaches position B.

Calculate the amount of kinetic energy of the cart at position C.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.