Un vehicle surt, en un instant, d'un punt A cap a un altre punt B amb una velocitat constant de 36 km/h. Després d'un minut(60 segons) un altre vehicle surt de B cap a A, partint del repòs, amb una acceleració d'1 m/s2. Sabent que la distància entre A i B és de 3 km, a quina distància de A es trobaran els vehicles? (SOL:1200m)

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The material that keeps its new shape after it is stretched is called?

Sound is a disturbance that travels through a medium as a