HELP MEE PLEASEE.... 1- Jennifer and Ben are riding in a bus at highway speed on

Question

HELP MEE PLEASEE....

1- Jennifer and Ben are riding in a bus at highway speed on a nice summer day when an unlucky bug splatters onto the windshield. Jennifer and Ben begin discussing the physics of the situation. Ben suggests that the momentum change of the bug is much greater than that of the bus. After all, argues Ben, there was no noticeable change in the speed of the bus compared to the obvious change in the speed of the bug. Jennifer disagrees entirely, arguing that that both bug and bus encounter the same force, momentum change, and impulse. Who do you agree with? Support your answer. (physicsclassroom)

2.     A football linebacker (100kg) runs full speed (the linebacker can do the 40 yard dash in 4.8 seconds) into a stationary quarterback

Explanation / Answer

q1
same force is acting on the bug and the bus. moomentum is always conserved, meaning that the momentum and impulse is same for both bus and bug. hence jennifer is correct

q2

40 * 3 * 30 /100 = 36m/s
momentum = 36 * 100 = 3600 Kgm/s
energy transfered = 64800 joules

q3
8m/s

q4

48 kgm/s
48 kgm/s

q5)

6.525 newton/second

q6)
0.25/.5 = 0.5
hence massis half kg ( 0.5 kg)

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