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olga nikolaevna [1]
3 years ago
7

Explain the changes in energy as a ball is held in the air , and then dropped​

Physics
1 answer:
Nostrana [21]3 years ago
3 0

Answer:

Potential Energy to Kenetic Energy

Explanation:

When holding a ball in the air, the ball has potential energy. Once you drop the ball, the ball gains Kenetic Energy

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garik1379 [7]

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i think its B

Explanation:

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to what height will a 250g soccer ball rise to if it is kicked directly upwards at 8 meters per second​
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Answer:

3.2 m

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Two hockey players have a total momentum of +200 kg x m/s before a collision (+ is to the right). After the collision, they move
Juliette [100K]

Total momentum after the collision: +200 kg m/s to the right

Explanation:

We can answer this question by using the law of conservation of momentum, which states that for an isolated system (=no external forces acting on the system), the total momentum is conserved.

Mathematically,

p_i=p_f

where

p_i is the total momentum before the collision

p_f is the total momentum after the collision

In this problem, the system consists of two hockey players. Before the collision, their total momentum is

p_i = +200 kg m/s (to the right)

Therefore, according to the law of conservation of momentum, their total momentum after the collision must be the same:

p_f = +200 kg m/s

And given that the sign is +, the direction is still the same, therefore to the right.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

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8 0
3 years ago
What energy is the candle giving off
gregori [183]
The candle is giving off light
Chemical energy from the candle is converted to thermal energy
5 0
3 years ago
A rocket starts from rest to 12s , it’s speed became 120m. find the distance it covered
gayaneshka [121]

Answer:

1440 m

Explanation:

Speed = Distance/Time

Distance = Speed × Time

               = 120 × 12

               = <u>1440m</u>

7 0
3 years ago
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