The Speed of
Answer to Problem 89P
The speed of
Explanation of Solution
Given:
The mass of ball 1 is
The mass of ball 2 is
The speed of ball 1 before collision is
The speed of ball 2 before collision is
The speed of ball 2 after collision is
The direction of ball 1 after collision from incident direction is
Formula Used:
The expression for conservation of momentum is X-direction is given by,
The expression for conservation of momentum is Y-direction is given by,
The expression for kinetic energy after collision is,
The expression for kinetic energy before collision is,
Calculation:
The expression for conservation of momentum is X-direction is calculated as,
The expression for conservation of momentum is Y-direction is calculated as,
Square Equation (1) and (2) and add them
Further simplify the above,
Further simplify the above,
This implies,
So,
The value of total kinetic energy ffter collision when
The value of total kinetic energy after collision when
The value of total kinetic energy before collision is calculated as,
When
From Equation (2),
Conclusion:
Therefore, the speed of
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Chapter 8 Solutions
Physics for Scientists and Engineers
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