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How much time elapses before the two cars collide?
Two cars, A and B, are 400. meters apart. Car A travels dueeast at 30. meters per second on a collision course withcar B, which travels due west at 20. meters per second.

How much time elapses before the two cars collide?<br/>
Two cars, A and B, are 400. meters apart. Car A travels dueeast at 30. meters per second on a collision course withcar B, which travels due west at 20. meters per second.

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A. 13 s
B. 8.0 s
C. 20. s
D. 40. s

This question is part of Velocity and Acceleration Quiz
Asked by Bilbojaggens, Last updated: Mar 15, 2020

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2 Answers

C. Bernthal

Its kind of my job to give answers

C. Bernthal, Teacher, MA, P.hD, Seattle

Answered May 29, 2019

It would not be a good idea for two cars to be traveling in opposite directions towards each other. The likelihood that one car will miss is unlikely and dangerous. However, there may be two cars that are rounding a sharp corner on a mountain. Sometimes, one car will be turning the corner and move into the other lane to be able to round the corner accurately.

The other car might be able to round the corner more comfortable because they are traveling at a slower rate. If one car is moving east at thirty meters per second and the other vehicle is traveling at twenty meters per second, then only eight seconds would elapse before the cars collide with each other.

 

priya_hemika

Priya_hemika

Answered Oct 27, 2016

8.0 s
 

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