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A train changes its velocity from 70km / h to 20km / h in 6 s The distance it covered is:
a) 75.0 m
b) 9.87 m
c) 15.4 m
d) 20.6 m

Sagot :

shubhamchouhanvrVT

The distance covered by the train will be 75 meters.

What is the equation of motion?

Physics equations called equations of motion describe how a physical system acts in terms of how its motion alters over time.

The equations of motion, which are a group of mathematical functions stated in terms of dynamic variables, provide a more thorough description of how a physical system behaves.

Given that a train changes its velocity from 70km / h to 20km / h in 6 s.

Use the first equation of motion:-

V= U + at

20 = 70 + ( 1 / 600)a

-50 = ( 1 / 600)a

a = -30000

Use another equation of motion:-

V² = u² + 2as

20² = 70² + 2 ( -30000)S

400 - 4900 = -60000S

-4500 = -60000S

S = -4500 / -60000

S = 0.075 KM

S = 75 meters

Therefore, the distance covered by the train will be 75 meters.

To know more about an equation of motion follow

https://brainly.com/question/25951773

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