Momentum and Inelastic Collision Exercises (1) A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows. The bag slows the car down, but it is unable to completely stop it because it ruptures at At = 1.8 s after the car hits, scattering marshmallows all over the countryside. Suppose the bag exerts a force on the car that depends on time (t) given by F = -At²; A = 7.2 x 10³ N/s² when t is in seconds from the moment the car hits the bag (t = 0) until the moment the bag ruptures. What is the speed of the car after the bag ruptures? (answer: 14 m/s)

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Chapter8: Linear Momentum And Collisions
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Problem 25PE: Professional Application Consider the following question: A car moving at 10 m/s crashes into a tree...
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Momentum and Inelastic Collision Exercises
(1) A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows. The bag slows the car
down, but it is unable to completely stop it because it ruptures at At = 1.8 s after the car hits, scattering
marshmallows all over the countryside. Suppose the bag exerts a force on the car that depends on time (t)
given by
F = -At²; A = 7.2 x 10³ N/s² when t is in seconds
from the moment the car hits the bag (t = 0) until the moment the bag ruptures. What is the speed of the
car after the bag ruptures? (answer: 14 m/s)
Transcribed Image Text:Momentum and Inelastic Collision Exercises (1) A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows. The bag slows the car down, but it is unable to completely stop it because it ruptures at At = 1.8 s after the car hits, scattering marshmallows all over the countryside. Suppose the bag exerts a force on the car that depends on time (t) given by F = -At²; A = 7.2 x 10³ N/s² when t is in seconds from the moment the car hits the bag (t = 0) until the moment the bag ruptures. What is the speed of the car after the bag ruptures? (answer: 14 m/s)
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