Q.

An object reaches a maximum vertical height of 23.0 m when thrown vertically upward on the earth. How high would it travel on the moon where the acceleration due to gravity is about one sixth that on the earth ? Assume that initial velocity is the same

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a

69 m

b

138 m

c

100 m

d

10 m

answer is A.

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Detailed Solution

On ground

H=23,g=9.8m/s2

u=2gh

=2(23)(9.8)

=450.8

u=21.23m/s

On moon,gm=g6,u=21.23m/s

H1=u22gm=(21.23)22(9.86)

=450.8×62×9.8

=2704.819.6

H1=138m

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