Question

a body of mass 1 kg is allowed to fall freely from height of 10 m . Afyer one meter find it's Kinetic energy and potential energy​

Answer 1

Given

• Mass = 1 kg
• Initial Height = 10 m
• Height from which we have to find all values = 10-1 = 9 m
• Gravitational Acceleration = 10 m/s²

To Find

• Kinetic Energy and the Potential Energy of the body

Solution

● Kinetic Energy = ½mv²

● Potential Energy = mgh

✭ Kinetic Energy of the body :

→ Eₖ = ½mv²

• Initial velocity would be 0 m/s at the start as the ball is initially in rest, after 1 m with an acceleration of 10 m/s² the velocity of the body would become 10 m/s

→ Eₖ = ½ × 1 × 10²

→ Eₖ = 50 J

✭ Potential Energy of the body :

→ Eₚ = mgh

→ Eₚ = 1 × 10 × 9

→ Eₚ = 90 J

∴ The Kinetic Energy of the body is 50 J and the Potential Energy is 90 J