The windshield of a speeding car hits a hovering insect. Consider the time inter

Question

The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are correct? (Select all that apply.)

Choose the system so that the change of momentum zero. Compare the change of momentum and the change in velocity of the car and the bug, respectively.

1. The magnitude of change of momentum of the car is bigger that that of the bug.

2.The system consists of the car alone.

3. The magnitude of change of momentum of the bug is bigger than that of the car.

4. The system consists of the bug plus the car.The magnitudes of the change of velocity are equal for car and bug.

5. The magnitude of change of velocity of the car is bigger than that of the bug.

6. The magnitude of change of velocity of the bug is bigger than that of the car.

7. The magnitudes of the change of momentum are equal for car and bug.

8. The system consists of the bug alone.

Explanation / Answer

according to law of conservation of momentum

initial momentum of car + bug = final momentum of the car+ bug

here car and bug considered as a system

Since bug is much smaller than car then the change in velocity of bug is greater than the change in velocity of the car

So the correct statements are

6. The magnitude of change of velocity of the bug is bigger than that of the car.

7. The magnitudes of the change of momentum are equal for car and bug.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.