Question

a body is moving horizontally at a height of 10 m has its potential energy equal to kinetic energy . Then velocity of that body is ?

Answer 1

10 into 9.8m/s =98m/s

Answer 2

Answer:

14m/s

Explanation:

The velocity of the body is 14 m/s.

Explanation:

Potential energy of a body is given by :

P=mghP=mgh

Kinetic energy of the body is given by :

K=\dfrac{1}{2}mv^2K=21mv2

Height, h = 10 m

A body moving horizontally at a height of 10 m has its potential energy equal to kinetic energy. So,

mgh=\dfrac{1}{2}mv^2mgh=21mv2

v=\sqrt{2gh}v=2gh

v=\sqrt{2\times 9.8\times 10}v=2×9.8×10

v = 14 m/s

So, the velocity of the body is 14 m/s. Hence, this is the required solution.

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