Calculating Relative Velocity: Train vs. Car Collision

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Homework Help Overview

The problem involves calculating relative velocity in the context of a potential collision between a train and a car at a railway crossing. The train is traveling at 100 km/h towards the north-east, while the car approaches from the west at 80 km/h. The scenario includes determining the relative velocity of the car with respect to the train, assessing the positions of both vehicles at the crossing, and exploring the necessary acceleration for a collision.

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kidgt23
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Homework Statement


A person on a train watches a car approaching a railway crossing ahead on his track. It appears that the car’s driver has fallen asleep and will not slow down. The train is traveling north‐east at 100km/h while the car is going west at 80km/h. The train is 4 km and the car is 3km from the crossing. I) What is the velocity of the car relative to the train. Pick the train travel direction (North‐ East) as the +x direction and the perpendicular direction (North‐west) as the +y direction II) Where will the train be when the car gets to the crossing, will they collide? III) Find the acceleration of the car required to cause a collision. IV) In the reference frame of the train rider, what is the acceleration.

Homework Equations

The Attempt at a Solution

 
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Hi kid, :welcome:

Is there a question here ? PF has a specific culture (read the guidelines) asking something from you ...
 
could u solve it
 
kidgt23 said:
could u solve it
In order to get help you need to show your best attempt to solve the problem and explain where you get stuck. We can just do the problem for you.
 

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