13. [-I1 Points] DETAILS SERPSE10 9.3.P.008.CTX. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER You and your brother argue often about how to safely secure a toddler in a moving car. You insist that special toddler seats are critical in improving the chances of a toddler surviving a crash. Your brother claims that, as long as his wife is buckled in next to him with a seat belt while he drives, she can hold onto their toddler on her lap in a crash. You decide to perform a calculation to try to convince your brother: Consider a hypothetical collision in which the 13 kg toddler and his parents are riding in a car traveling at 43 mi/h relative to the ground. The car strikes a wall, tree, or another car, and is brought to rest in 0.12 5. You wish to demonstrate to your brother the magnitude of the force necessary for his wife to hold onto their child during the collision. What is the magnitude of this force (in N)? :i\" Need Help? 14. [-l3 Points] DETAILS SERPSE10 9.3.P.009.M|. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER The front 1.20 m of a 1,3ODkg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) Ifa car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? 5 H (b) What is the magnitude of the average force on the car? N H (c) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity. 9 Need .9... _QW H 15. [-I4 Points] SERPSE109.3.P.O10. 0/6 Submissions Used The magnitude of the net force exerted in the x direction on a 2.75kg particle varies in time as shown in the figure below. INN) 4 _ _f(5) :) 0 l 2 '3 4 (a) Find the impulse of the force over the 5.00-s time interval. _. I = N - s (b) Find the final velocity the particle attains if it is originally at rest. vf = m/s (c) Find its final velocity if its original velocity is -2.50 i m/s. Vr = m/s (d) Find the average force exerted on the particle for the time interval between 0 and 5.00 s. F = N Need Help? _' 16. [-I1 Points] SERPSE109.3.P.O11. 0/6 Submissions Used Waterfalls without splashing at a rate of 0.370 Us from a height of 2.50 m into a 0.5007kg bucket on a scale. If the bucket is originally empty, what does the scale read 2.20 s after water starts to accumulate in it? (Note that you can ignore the initial impulse at t = 0.) :1\" Need Help? _