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31.07.2020 •
Physics
Exactly 2.8 s after a cannon-ball is fired into the air from the ground, it is observed to have a velocity v = (8.0 i^ + 4.9 j^)m/s, where the x axis is horizontal and the y axis is positive upward.
A) Determine the horizontal range of the projectile
B) Determine its maximum height above the ground
C) Determine the speed of motion just before the projectile strikes the ground.
D) Determine the angle of motion just before the projectile strikes the ground.
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Ответ:
it is A
Explanation:
Ответ:
1 is a answer of a question