Um carro viaja de uma cidade a a uma cidade b, distantes 200km. seu percurso demora 4 horas ,pois decorrida uma hora de viagem ,o pneu dianteiro esquerdo furou e precisou ser trocado, levando 1 hora e 20 minutos do tempo total gasto. qual foi a velocidade média que o carro desenvolveu durante a viagem

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

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?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m