Question

Calculate the height to which a body of mass 50kg must be raised for it to acquire a potential energy equal to the kinetic energy of a similar body moving with a velocity of 15 metre per second

Answer 1

Explanation:

mgh=mv²/2

50x9.8xh=50(15/60)²/2

solve this u get h value OK friend

Answer 2

Answer:

Gravitational potential energy is given by the expression,

W = m g h

where,

h = Height above the ground = 10 m

m = Mass of the object = 50 kg

g = Acceleration due to gravity = 10 ms-2

W = 50 × 10 × 10 = 5000 J.

At half-way down, the potential energy of the object will be, begin mathsize 12px style 5000 over 2 space equals space 2500 space straight J end style  

At this point, the object has an equal amount of potential and kinetic energy. This is due to the law of conservation of energy. Hence, half-way down, the kinetic energy of the object will also be 2500 J.

Hope it helps.....

mark as brainliest if it does....

Thank you