A 3kg ball moving at 8 m/s strikes a 2kg ball at rest, if the collision is elastic, what is the speed of the lighter ball if the heavier ball moves at 2m/s in the opposite direction

Speed of lighter ball is 4 m/s.

Explanation:

Applying the principle of conservation of linear momentum,

momentum before collision = momentum after collision.

+ = -

= 3 kg, = 8 m/s, = 2 kg, = 0 m/s ( since it is at rest), = 2 m/s, = ?

(3 x 8) + (2 x 0) = (8 x 2) - (2 x )

24 + 0 = 16 - 2

2 = 16 - 24

2 = -8

=

   = -4 m/s

This implies that the light ball moves at the speed of 4 m/s in the opposite direction of the heavier ball after collision.

it breaks and dirupture other materials and other sencews from the bottom

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!