Block a, with a mass of 4.0 kg, is moving with a speed of 2.0 m/s while block b , with a mass of 8.0 kg, is moving in the opposite direction with a speed of 3.0 m/s. the center of mass of the two block system is moving with velocity of?

Determine the maximum r-value of the polar equation r =3+3 cos 0

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?

What are the dimensions of the cross section that passes through the points a, f, g, and d?