a. When the stone reaches its maximum height, for a moment the velocity of the stone becomes zero at that instant and then it starts falling back towards ground. So, the maximum height to which the stone can reach is 80 m
b. It takes about 88 seconds for the cannonball to reach its maximum height (ignoring air resistance). You have 176 seconds, or 2 minutes and 56 seconds, until the cannonball destroys the cannon that fired it.
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Answer:
a. When the stone reaches its maximum height, for a moment the velocity of the stone becomes zero at that instant and then it starts falling back towards ground. So, the maximum height to which the stone can reach is 80 m
b. It takes about 88 seconds for the cannonball to reach its maximum height (ignoring air resistance). You have 176 seconds, or 2 minutes and 56 seconds, until the cannonball destroys the cannon that fired it.
c.