Question

The correct answers are:-
(a)49J
(b)7_/2m/s (seven under root two)

PLEASE GIVE ME THE SOLUTION
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Answer 1

Answer:

49j

Explanation:

v2-u2=2as

v2-0 = 2gh(u=0)

v =√(2×10×5)

=√100

=10m/s

k.E=1/2mv×v

=1/2 1×100

=50j

i took g as 10m/s2

if you take g as 9.8 you will get accurate answer.