The initial speed of the van if finally, the van and compact car move off together at
Answer to Problem 76A
Explanation of Solution
Given:
The mass of the van,
The mass of the compact car,
Since, initially the compact car was at rest, thus initial velocity of car,
Final velocity of van and car,
Formula used:
Momentum of an object of mass m and moving with velocity v is given by,
And, law of conservation of linear momentum: Momentum is conserved in a closed and isolated system and is given by,
Calculation:
Consider the car and van as a system, then it will be a closed and isolated system and law of conservation of momentum can be applied to it.
Let, the initial speed of the van be
Using given values in above,
Conclusion:
Thus, the initial velocity of the van is
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Glencoe Physics: Principles and Problems, Student Edition
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