Jeremy accidently dropped his toy stuffed animal from the balcony of his apartment on the fourth floor. the toy hit the ground at a velocity of 16.0 meters/second. at impact, it took 2.0 seconds for the toy’s velocity to reach 0 meters/second. if the toy has a mass of 0.25 kilograms, what's the force of the impact?

What is the scientific definition of energy that relates to work

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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?