B) The stretched surface of the trampoline begins to contract. The athlete is pushed vertically upwards and she accelerates. At time t, when her
upwards velocity is 6.0 m/s, she loses contact with the surface.
i)
Calculate her kinetic energy at time t.

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

Which changes of state do the labels represent? a: b: c:

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic