An 18-kg child is riding in a child-restraint chair,
Chapter 4, Problem 97(choose chapter or problem)
An 18-kg child is riding in a child-restraint chair, securely fastened to the seat of a car (Fig. 477). Assume the car has speed when it hits a tree and is brought to rest in 0.20 s. Assuming constant deceleration during the collision, estimate the net horizontal force F that the straps of the restraint chair exert on the child to hold her in the chair.
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