An 18-kg child is riding in a child-restraint chair, securely fastened to the seat of a car (Fig. 4–77). Assume the car has speed 45 km/h when it hits a tree and is brought to rest in 0.20 s. Assuming constant deceleration during the colli- sion, estimate the net horizontal force F that the straps of the restraint chair exert on the child FIGURE 4–77 to hold her in the chair. Problem 97.

An 18-kg child is riding in a child-restraint chair, securely fastened to the seat of a car (Fig. 4–77). Assume the car has speed 45 km/h when it hits a tree and is brought to rest in 0.20 s. Assuming constant deceleration during the colli- sion, estimate the net horizontal force F that the straps of the restraint chair exert on the child FIGURE 4–77 to hold her in the chair. Problem 97.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 5.9CYU: Check Your Understanding One end of a 3.0-m rope is tied to a tree; the other, end is tied to a car...

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