Un cañón lanza un proyectil desde un valle con una velocidad de 120 m/s a un ángulo de 60 grados en un tiempo de 5 segundos. El alcance del proyectil es:

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

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?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?