Question

two cars are 60 km away from each other and are moving towards each other at 16 km per hour and 184 km per hour how far are they from each other one and a half minute before their collision​

Answer 1

Answer:

The distance between cars 1.5 min before collision is 5 km.

Answer 2

Distance between the two cars  one and a half minute before their collision is 55 km.

Explanation:

Given:

Two cars are 60 km away from each other.

Two cars moving towards each other at 16 km per hour and 184 km per hour.

To Find:

The distance they from each other one and a half minute before their collision​.

Solution:

Let  velocity of car 1st is p km/hr and  velocity of car 2nd is q km/hr.

As given,Two cars moving towards each other at 16 km per hour and 184 km per hour.

p=16 km per hour  and  q=184 km per hour

Therefore, their net velocity of approach R= p+q

                                                                        $=16+184=200 km\ per\ hour$

Time in  one and a half minute T $=1.5\ minute$

                                                       $=0.025\ hour$

Distance covered by this  net velocity $=R\times T=200\times0.025$

                                                                   $=5km$                                    

As give,two cars are 60 km away from each other.

Initial distance between two cars= 60 km

Distance between the two cars  one and a half minute before their collision=Initial distance between two cars- Distance covered by this  net velocity

             $=60-5$

             $=55km$

Thus,distance between the two cars  one and a half minute before their collision is 55km.

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