Question

19. An object is thrown vertically upwards with
velocity of 20 m/s. At what height will its
kinetic energy and potential energy be equal
(g - 10 m/s)

ans is not 20m
if you have another answer
plz do help
with step by step explaination



ans:10m​

Answer 1

Answer:

10 m.

Explanation:

H = v²/2g = 400/20 = 20 m.

in fact this is the maximum height , at this height K.E = 0

, according to the law of energy conservation

total energy ( maximum) = mgH = 200m

for the question the required energy = 100m ( shared by both KE & PE)

mgh = 100m

h = 10 m.