Un tren que experimenta un cambio de velocidad de 10m/s a 30 m/s en 4 segundos. ¿Cuál será el valor de su aceleración? ¿Qué distancia habrá recorrido en ese trayecto?

The man fires an 80 g arrow so that it is moving at 80 m/s when it hits and embeds in a 8.0 kg block resting on ice. how far will the block slide on the ice before stopping? a 7.1 n friction force opposes its motion.

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)