Concept explainers
Lisa in her Lamborghini accelerates at
(a)
The relative speed of Lisa with respect to Jill after
Answer to Problem 4.61AP
The relative speed of Lisa with respect to Jill after
Explanation of Solution
The acceleration of Lisa in her Lamborghini is
Write the expression for the first law of motion to calculate the final velocity of Lisa’s Lamborghini
Here,
Substitute
Write the expression for the first law of motion to calculate the final velocity of Jill’s Jaguar
Here,
Substitute
The relative velocity of Lisa with respect to Jill
Here,
Conclusion:
Substitute
Find the magnitude of the above found velocity
Therefore, the Lisa’s speed with respect to Jill after
(b)
The distance between Lisa and Jill.
Answer to Problem 4.61AP
The distance between Lisa and Jill is
Explanation of Solution
Write the formula for second law of motion to calculate the displacement of Lisa’s Lamborghini
Here,
Substitute
Write the formula for second law of motion to calculate the displacement of Jill’s Jaguar
Here,
Substitute
Write the expression for the separation between these persons
Here,
Substitute
Conclusion:
Therefore, the distance between Lisa and Jill is
(c)
The relative acceleration of Lisa with respect to Jill.
Answer to Problem 4.61AP
The relative acceleration of Lisa with respect to Jill is
Explanation of Solution
Write the formula to calculate Lisa acceleration relative to Jill
Here,
Conclusion:
Substitute
Therefore, Lisa’s acceleration relative to Jill is
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Chapter 4 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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