A car traveling at 13.7 meters per second crashes into a barrier and stops in 0.280 meters. a. How long does it take the car to stop? Include units in your answer. More information. Hint: This is a constant acceleration problem. b. What force must be exerted on a child of mass 25.8 kilograms to stop him or her in the same time as the car? Include units in your answer. More information. Hint: This is an impulse-momentum theorem problem. c. How many times the weight of the child is this force?

International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter1: Introduction To Statics
Section: Chapter Questions
Problem 1.19P: Plot the earths gravitational acceleration g(m/s2) against the height h (km) above the surface of...
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A car traveling at 13.7 meters per second crashes into a barrier and stops in 0.280 meters.

a. How long does it take the car to stop? Include units in your answer. More information. Hint: This is a constant acceleration problem.

b. What force must be exerted on a child of mass 25.8 kilograms to stop him or her in the same time as the car? Include units in your answer. More information. Hint: This is an impulse-momentum theorem problem.

c. How many times the weight of the child is this force?

A car traveling at 13.7 meters per second crashes into a barrier and stops in 0.280 meters.
a. How long does it take the car to stop? Include units in your answer. More information. Hint: This is a constant acceleration problem.
4.0
b. What force must be exerted on a child of mass 25.8 kilograms to stop him or her in the same time as the car? Include units in your answer. More information. Hint: This is an impulse-momentum
theorem problem.
4.0
c. How many times the weight of the child is this force?
4.0
times the the weight of the child
This is why we should use child safety seats and not just have kids sit on our laps.
Transcribed Image Text:A car traveling at 13.7 meters per second crashes into a barrier and stops in 0.280 meters. a. How long does it take the car to stop? Include units in your answer. More information. Hint: This is a constant acceleration problem. 4.0 b. What force must be exerted on a child of mass 25.8 kilograms to stop him or her in the same time as the car? Include units in your answer. More information. Hint: This is an impulse-momentum theorem problem. 4.0 c. How many times the weight of the child is this force? 4.0 times the the weight of the child This is why we should use child safety seats and not just have kids sit on our laps.
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