A 20 kg rock is on the edge of a 100 meter cliff. What is the potential energy of the rock and if the rock falls off the cliff,

what is its kinetic energy just before striking the ground?

a 361.4 kJ

b 1kJ. 1 kJ

C 19.6 kJ, 19.6 kJ

d 10 kl. 5.5 ku

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation