Asked by ABDUL AAZIZ
                Q23. Object is thrown vertically upwards and has a speed of 18 m/s when it reaches one-fourth of its maximum height h above its launch point. Label the relevant points and answer the following;
a) Determine the maximum height h.
b) What is the initial speed of throwing the object?
            
            
        a) Determine the maximum height h.
b) What is the initial speed of throwing the object?
Answers
                    Answered by
            Damon
            
    at h/4
total mechanical energy
= m g(h/4)+(1/2)m (18)^2
at h
total mechanical energy
= m g h + 0
so
gh = gh/4 + 9*18
for part b
(1/2)m v^2 = m g h
    
total mechanical energy
= m g(h/4)+(1/2)m (18)^2
at h
total mechanical energy
= m g h + 0
so
gh = gh/4 + 9*18
for part b
(1/2)m v^2 = m g h
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