) Show that the time taken for the cannonball to reach the water surface after being fired from the cannon was 3.7 s. assume the air resistance was negligible. ) Calculate the velocity at which the cannonball was fired. :) Calculate the vertical component of the velocity just before the cannonball hit the ship.
) Show that the time taken for the cannonball to reach the water surface after being fired from the cannon was 3.7 s. assume the air resistance was negligible. ) Calculate the velocity at which the cannonball was fired. :) Calculate the vertical component of the velocity just before the cannonball hit the ship.
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Transcribed Image Text:2. In a castle, overlooking a river, a cannon was once employed to fire at enemy ships.
One ship was hit by the cannonball at a horizontal distance 150 m from the cannon as
shown in the figure below. The height of the cannon above the river was 67 m and the
cannonball was fired horizontally.
cannon
Not drawn to scale
ship
67m
path of
cannonball
150 m
a) Show that the time taken for the cannonball to reach the water surface after being
fired from the cannon was 3.7 s. assume the air resistance was negligible.
b) Calculate the velocity at which the cannonball was fired.
c) Calculate the vertical component of the velocity just before the cannonball hit the
ship.
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