Describe how a footballer would feel standing in the tunnel waiting to go out and play their game, what would happen to their heart rate?

How would doubling the made of an object change the objects potential energy

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

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?