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Bunnybear3384
23.03.2020 •
Physics
Two balls have masses 18 kg and 47 kg. The 18 kg ball has an initial velocity of 76 m/s (to the right) along a line joining the two balls and the 47 kg ball is at rest. They make a head-on elastic collision with each other. What is the final velocity of the 18 kg ball?
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Ответ:
The final velocity of 18 kg ball is
= 42.09 ![\frac{m}{sec}](/tpl/images/0558/9317/dd157.png)
Explanation:
Mass of first ball
= 18 kg
Mass of second ball
= 47 kg
Initial velocity of 18 kg ball
= 76 ![\frac{m}{sec}](/tpl/images/0558/9317/dd157.png)
Initial velocity of 47 kg ball = 0
Final velocity of 18 kg ball
= ??
Final velocity of 18 kg ball is given by the formula
Put all the values in above formula we get
Thus, the final velocity of 18 kg ball is
= 42.09 ![\frac{m}{sec}](/tpl/images/0558/9317/dd157.png)
Ответ:
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