The velocities of the balls after the collision
Answer to Problem 57QAP
The velocity of first ball after collision is 1 m/s towards left and second ball is 2 m/s towards right.
Explanation of Solution
Given info:
A 2.00 kg ball moves at 3.00 m/s towards the right. It collides elastically with a 4.00 kg ball that is initially at rest.
Formula used:
Using the formula, conservation of linear momentum
Here,
Also, for elastic collision
Calculation:
We have,
Substituting the given values in equ.(1), we get
Now from equation (2)
Adding equation (3) and (4), we get
Substituting in equation (3), we get
Conclusion:
Thus, the velocity of first ball after collision is 1 m/s towards left and second ball is 2 m/s towards right.
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Chapter 7 Solutions
COLLEGE PHYSICS
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