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uC Chegg Study | Gu Webassign.net/web/Student/Assignment-Responses/submit2dep-18357305 Need Help? man 9 9.P 017 MI.FB 0 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. a) If a car traveling 30.o m/s stops uniformly in 1.20 m, how long does the collision last? (b) What is the magnitude of the average force on the car? (c) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity. Need Help? ReMaster SerPSE9 9.P.018 W A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 19.5 m/s and returns the shot with the ball raveling horizontal (a) What is the impulse delivered to the ball by the tennis racket? 3.45 (b) Some work is done on the system of the ball and some energy appears in the ball as an increase in internal energy during the collisión

Explanation / Answer

Only one question can be posted as per chegg guidelines

p.17)

a)

From

V2=Vo2+2ad

=>0 =302+2*a*(1.2)

a=-375 m/s2

From

V=Vo+at

=>0=30+(-375)t

t=0.08 s

b)

F=mdV/dt =1350*(30/0.08)

F=506,250 N

c)

a=(-375/9.81)g=-38.23g

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