A mortar gu, with a maximum range of 20 m on level ground, is placed on the edge of a vertical cliff of height 10 m overlooking a horizontal plane, as illustrated in the following figure. 20 m (a) Consider the sub-problem of the mortar gun on level ground with maximum range of 20 m. Show that the flight time for the projectile on level ground is tf = Hint: The angle required to obtain maximum range is 0 = 7/4. (b) Consider the sub-problem of the mortar gun on level ground with maximum range of 20 m. Show that vo = 2/5g. Hint: The angle required to obtain maximum range is 0 – 1/1.

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Please help with (b) , the second question 

A mortar gun, with a maximum range of 20 m on level ground, is placed on the edge
of a vertical cliff of height 10 m overlooking a horizontal plane, as illustrated in the
following figure.
20 m
(a) Consider the sub-problem of the mortar gun on level ground with maximum
range of 20 m. Show that the flight time for the projectile on level ground is
V2 vo
tj =
Hint: The angle required to obtain maximum range is 0 = 1/4.
(-
(b) Consider the sub-problem of the mortar gun on level ground with maximum range of
20 m. Show that
vo = 2/5g.
Hint: The angle required to obtain maximum range is 0 – /1.
10 m
Transcribed Image Text:A mortar gun, with a maximum range of 20 m on level ground, is placed on the edge of a vertical cliff of height 10 m overlooking a horizontal plane, as illustrated in the following figure. 20 m (a) Consider the sub-problem of the mortar gun on level ground with maximum range of 20 m. Show that the flight time for the projectile on level ground is V2 vo tj = Hint: The angle required to obtain maximum range is 0 = 1/4. (- (b) Consider the sub-problem of the mortar gun on level ground with maximum range of 20 m. Show that vo = 2/5g. Hint: The angle required to obtain maximum range is 0 – /1. 10 m
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