Allie is flying from New York to London. Her plane will most likely fly in the:

stratosphere
thermosphere
troposphere
mesosphere

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u. s. legal proceeding.)

Anybody wanna ? (picture included? )