Answer:
The net force and the acceleration on the falling skydiver is upward
Explanation:
An upward net force on a downward falling object would cause that object to slow down. the skydiver this slows down. As the speed decreases, the amount of air resistance also decreases until once more the skydiver reaches a terminal velocity.
Cold temperature can't "flow" into a warmer object, in this case, the person's hand. The heat energy of the hand gets transferred to the colder object, the ice.
Answer:
b)
Explanation:
Rotational inertia of the sphere: 
Rotational inertia of hollow sphere: 
Rotational inertia of flat disk: 
The largest value is 2/3 mr², therefore, hollow sphere's inertia is largest.
One of the most common energy transformations is the transformation between potential energy and kinetic energy. In waterfalls such as Niagara Falls, potential energy is transformed to kinetic energy. The water at the top of the falls has gravitational potential energy. As the water plunges, its velocity increases. Thanks to google!!!! LOL :)
