Answer: Electrical energy is converted into other forms of energy, such as sound.
Explanation: Using the law of conservation of energy we know that energy can never be destryped it can be transferred or be transformed into from one form to another.
Answer:
a= (-g) from the moment the ball is thrown, until it stops in the air.
a = (0) when the ball stops in the air.
a = (g) since the ball starts to fall.
Explanation:
The acceleration is <em>(-g)</em> <em>from the moment the ball is thrown, until it stops in the air</em> because the movement goes in the opposite direction to the force of gravity. In the instant <em>when the ball stops in the air the acceleration is </em><em>(0)</em> because it temporarily stops moving. Then, <em>since the ball starts to fall, the acceleration is </em><em>(g)</em><em> </em>because the movement goes in the same direction of the force of gravity
Any object being acted on by gravity has constant acceleration,
and it's the same number for every object.
On Earth, the acceleration of gravity is 9.8 m/s² downward.
That means that an object moving down moves 9.8 m/s faster every
second, and an object moving up moves 9.8 m/s slower every second
(and eventually runs out of upward gas and starts moving downward).
At the top of its path, the rock's velocity changes from upward to downward.
If you change from upward velocity to downward velocity, the change
has to be smooth ... There's no way to jump from upward to downward
without going through every value in between. There has to be a split
second when you're not moving upward OR downward. At that split
second, your velocity is zero.