Answer:
System with earth at centre and body revolving around it.
Explanation:
Given that gravitational and kinetic energy should be nearly equal without changing the mass or height.
So ,
Let us consider a system where we have a body revolving around the earth with a velocity such that it remains in orbit.
Gravitational potential energy at a height h from the ground is given by
For velocities satisfying abow the system can have gpe and ke same in ideal cases.
[Note: For the abow velocity usually the body will escape as potential at infinity will be zero .This can just be a type of system where gpe and ke will be equal without mass and height changing.]
WHY HELLO THERE! THE PREFIX NANO MEANS ''1 BILLIONTH OF'' AND IS USED MOSTLY WHEN TALKING ABOUT THE METRIC SYSTEM. HOPE THIS HELPED!!!!!
Answer:
Explanation:
The collision is elastic as no frictional force exists .
Both momentum and energy will be conserved.
We shall apply velocity formula applicable in respect of elastic collision
m₁ and m₂ be mass of red and green T shirt player , u₁ and u₂ be their initial velocity , v₁ and v₂ be their final velocity
v₂ = (m₂-m₁)u₂ / ( m₁+m₂) + 2 m₁u₁ / ( m₁+m₂)
Given m₁ = 40 kg , m₂ = 60 kg , v₂ = 2 m /s , u₁ = ? , u₂ = 0
Put the values in the equation
2 = 0 + 2 x 40 x u₁ / ( 40 + 60 )
u₁ = 2.5 m /s .
Initial speed of red T- shirt .