Galileo Galilei, he was kept under house arrest until his death in 1642
Explanation:
Given that,
Initial speed of the billiard ball 1, u = 30i cm/s
Initial speed of another billiard ball 2, u' = 40j cm/s
After the collision,
Final speed of first ball, v = 50 cm/s
Final speed of second ball, v' = 0 (as it stops)
Let us consider that both balls have same mass i.e. m
Initial kinetic energy of the system is :
![K_i=\dfrac{1}{2}mu^2+\dfrac{1}{2}mu'^2\\\\K_i=\dfrac{1}{2}m(u^2+u'^2)\\\\K_i=\dfrac{1}{2}m((30)^2+(40)^2)\\\\K_i=1250m\ J](https://tex.z-dn.net/?f=K_i%3D%5Cdfrac%7B1%7D%7B2%7Dmu%5E2%2B%5Cdfrac%7B1%7D%7B2%7Dmu%27%5E2%5C%5C%5C%5CK_i%3D%5Cdfrac%7B1%7D%7B2%7Dm%28u%5E2%2Bu%27%5E2%29%5C%5C%5C%5CK_i%3D%5Cdfrac%7B1%7D%7B2%7Dm%28%2830%29%5E2%2B%2840%29%5E2%29%5C%5C%5C%5CK_i%3D1250m%5C%20J)
Final kinetic energy of the system is :
![K_f=\dfrac{1}{2}mv^2+\dfrac{1}{2}mv'^2\\\\K_f=\dfrac{1}{2}m(v^2+v'^2)\\\\K_f=\dfrac{1}{2}m((50)^2+(0)^2)\\\\K_f=1250m\ J](https://tex.z-dn.net/?f=K_f%3D%5Cdfrac%7B1%7D%7B2%7Dmv%5E2%2B%5Cdfrac%7B1%7D%7B2%7Dmv%27%5E2%5C%5C%5C%5CK_f%3D%5Cdfrac%7B1%7D%7B2%7Dm%28v%5E2%2Bv%27%5E2%29%5C%5C%5C%5CK_f%3D%5Cdfrac%7B1%7D%7B2%7Dm%28%2850%29%5E2%2B%280%29%5E2%29%5C%5C%5C%5CK_f%3D1250m%5C%20J)
The change in kinetic energy of the system is equal to the difference of final and initial kinetic energy as :
So, the change in kinetic energy of the system as a result of the collision is equal to 0.
Yea the charge will change because ur adding more force
Answer:
Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field.
Explanation:
google
Answer:
Wavelength
Explanation:
Wavelength is the distance between successive trough or crest of a wave