Usain Bolt won multiple gold medals in the 2008, 2012, and 2016 Olympic games for the 100 m and 200 m dash events and team relay races. In 2009, Bolt set the record for the fastest 200.0 m dash, with a time of 19.19 s. Calculate his average speed in both km/hr and mi./hr.

Quantum mechanics applies to subatomic, atomic, nanometer-size, and micrometer-size systems. nanometer, micrometer, and kilometer-size systems. atomic, nanometer-size, and micrometer-size systems. subatomic, atomic, and nanometer-size systems.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending