Respuesta :
Answer:the velocity and the kinetic energy of the HSR if it travelled a distance of 180 km in just 1h 30min minutes.
In your answer, explain how can you know if the HSR has more kinetic energy. How can kinetic energy be transferred or transformed?
Explanation:suiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
The kinetic energy of the given mass is 2173 kJ. The energy of an object or body due to its movement is called kinetic energy.
What is kinetic energy?
It is the energy of an object or body due to its movement. It can be calculated by the formula,
[tex]KE = \dfrac 12 mv^2[/tex]
Where,
[tex]m[/tex] - mass = 400 tons = 400000 kg
[tex]v[/tex] - velocity
First, calculate the velocity.
[tex]v = \rm \dfrac {180 \km}{1.5 \ hours}\\\\v = 12 km/h\\\\v = 3.3 m/s[/tex]
Now, put the values in the formula,
[tex]KE = {\rm \dfrac 12 400000\ kg \times (3.3 \ m/s)^2}\\\\KE = 2178000 {\rm \ kg .m^2/s^2}\\\\KE = 2173\rm \ kJ[/tex]
Therefore, the kinetic energy of the given mass is 2173 kJ.
Learn more about the kinetic energy:
https://brainly.com/question/14026818
