when she must suddenly slam on the brakes to avoid hitting a dog crossing the wearing road. She is her seatbelt, which brings her body to a stop in 0.400 s. a) What average force did the seatbelt exert on her? b) If she had not been windshield wearing her seatbelt., and the her head in had stopped 1.0 10 -3 s, what average force would the windshield have exerted on her? X c) How many times greater is the stopping force of the windshield than the seatbelt? (18 points) Looking for: Solution (includes work): Given: Exercise 3: Relationship: Auto companies frequently test the safety of automobiles by putting them through tests to observe Looking for: Solution (includes work): the integrity of the passenger compartment. If a 1000 kg car is sent toward a cement Given: wall with a speed of 14 m/s and the impact brings it to a stop in 8.00 10- s, X 2 Relationship: with what average force is brought to it rest? (6 points) Rhonda, who has a mass of 60.0 kg, is riding at 25.0 m/ s in her sports car Exercise 4: Looking for: Solution Given:
Exercise 3: Auto companies frequently test the safety of automobiles by putting them through tests to observe the integrity of the passenger compartment. If a 1000 kg car is sent toward a cement wall with a speed of 14 m/s and the impact brings it to a stop in 8.00 X 10- 2 s, with what average force is it brought to rest? (6 points) Rhonda, who has a mass of 60.0 kg, is riding at 25.0 m/ s in her sports car when she must suddenly slam on the brakes to avoid hitting a dog crossing the road. She is wearing her seatbelt, which brings her body to a stop in 0.400 s. a) What average force did the seatbelt exert on her? b) If she had not been wearing her seatbelt., and the windshield had stopped her head in 1.0 X 10 -3 s, what average force would the windshield have exerted on her? c) How many times greater is the stopping force of the windshield than the seatbelt? (18 points) Looking for: Solution (includes work): Given: Relationship: Looking for: Solution (includes work): Given: Relationship: Exercise 4: Looking for: Solution Given:
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