A “K-9 cannon” uses a powerful rubber band to launch a tennis ball(mass of 0.0577 kg) vertically upwards. The tennis ball has a
1 answer:
Answer:
t = 5.1[s]
Explanation:
To solve this problem we must first use the following equation of kinematics.
where:
Vf = final velocity = 0
Vo = initial velocity = 25 [m/s]
g = gravity acceleration = 9.81 [m/s²]
t = time [s]
Now replacing:
Note: The key to understand this problem is that when the tennis ball is in the highest position its velocity is zero.
So it will take the same time from the highest point to the ground
t = 2.54 +2.54
t = 5.09 [s]
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another example is the thermometer, the thermometer has a liquid inside it which is Mercury or alcohol this liquid expands when the temperature rises, the tube is made narrow so that a small increase in volume of the liquid produces a large movement along the tube.
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Answer:
Explanation:
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