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AURORKA [14]
3 years ago
5

A train travelling at 50km/h approaches another train moving towards the first at 90km/h. If they are 35km apart (on a straight

track) how long does it take before they meet?
Physics
1 answer:
Ede4ka [16]3 years ago
8 0

it will take 36 seconds


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sara and tory are out fishing on the lake on a hot summer day when they both decide to go for a swim. sara dives off the front o
crimeas [40]

Here it is an application of Newton's III law

as we know by Newton's III law that every action has equal and opposite reaction

So here as we know that two boys jumps off the boat with different forces

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Now similar way we can say

from back side of the boat the boy jumps off with force 60 N which means as per Newton's III law if boy has a force of 60 N in backward direction then he must apply a reaction force on the boat in reverse direction of same magnitude

So boat must have an opposite force on front end with magnitude 60 N

So here net force due to both jump on the boat is given by

F_{net} = F_1 - F_2

F_{net} = 60 - 45

F_{net} = 15 N

so boat will have net force F = 15 N in forward direction due to both jumps

3 0
3 years ago
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marusya05 [52]

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Explanation:

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