Respuesta :

Explanation:

PE =200 J

m = 10

h=?

we know that ,

pE = mgh where g is acceleration due to gravity of earth = 10 m/s ^2

200= 10 ×10 × h

h = 2 m

and

KE = 1/2 mv^2

250 = 1/2 ×5 ×v^ 2

100 = V ^ 2

v= 10 m/s

good job