a sled with mass 8.00 kg moves in a straight line on a frictionless horizontal surface. at one point in its path, its speed is 4.00 m/s; after it has traveled 2.50 m beyond this point, its speed is 6.00 m/s. use the work-energy theorem to find the force acting on the sled, assuming that this force is constant and that it acts in the direction of the sled’s motion.

Three important things a musician must do for a superior performance. essay

Alex is the head photographer for the yearbook and the newspaper. she has a large staff of assistant photographers because they need to take pictures at all of the school events. she knows that some of her photographers have better cameras and can take action shots at sporting events, and that some of them are good at taking candid pictures in the hallways. she sets firm deadlines so she has enough time to look through all of the shots and choose the best ones. she gives her photographers constructive feedback to them improve their pictures. respectful enforcer warlord doormat peacemaker

What did pavlov initially notice about the animals in his original research after conditioning took place?