1 ponto Um avião decolar em uma pista retilínea. Ele inicia seu movimento na cabine com velocidade nula e corresponde a ela com aceleração constante de 2,0 m / s? Até o instante em que levanta o voo, com uma velocidade de 80 m / s, antes de terminar uma pista. O menor comprimento possível dessa pista é

The graph below represents the work done by a student while running up flights of stairs. determine the student's power output after 10 seconds: 1600 j/s 8000 j/s 160 j/s 800 j/s

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

Why should seat belts not be mandatory quick plz