Four identical cannons each launch a 20 kg cannonball at an angle of 60° above horizontal. Neglect air resistance. The initial speed is in the table: Cannon A B C D Initial speed of 50 m/s 40 m/s 40 m/s 50 m/s cannonball Rank the time to reach the highest point in the trajectory, greatest to least. O A = B = C = D O A = B > C > D O A = D > B = C none of these
Four identical cannons each launch a 20 kg cannonball at an angle of 60° above horizontal. Neglect air resistance. The initial speed is in the table: Cannon A B C D Initial speed of 50 m/s 40 m/s 40 m/s 50 m/s cannonball Rank the time to reach the highest point in the trajectory, greatest to least. O A = B = C = D O A = B > C > D O A = D > B = C none of these
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Four identical cannons each launch a 20 kg cannonball at an angle of 60° above
horizontal.
Neglect air resistance.
The initial speed is in the table:
Cannon
A
D
Initial speed of
50 m/s
40 m/s
40 m/s
50 m/s
cannonball
Rank the time to reach the highest point in the trajectory, greatest to least.
O A = B = C = D
O A = B > C > D
O A = D > B = C
none of these
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