It is given that the height of the tower is
The uncertainty the measurement of this height is
Drop time is measured as:
The uncertainty in measurement of time is:
Using the equation of motion: 
where, 
is the distance covered, 
is the initial velocity, 
is the acceleration and 
is the time.
(because canon ball is in free fall). we need to calculate the value of a=g.
The uncertainty in this value is given by:
Substitute the values:
Im not fully sure about this. But i believe its A.
For Example: The constant pull of gravity on the moon is way different then on the earth, same with the acceleration of gravity. This is why objects float more on the moon.
-Seth
Answer:The scale of a 50-mL buret is divided into 0.1 mL increments. Therefore, when the liquid level in a buret is read, it is read and recorded to the nearest 0.01 mL.
Explanation:
Answer:
Select the answer that states:
<em>VX = constant, and ay = -g</em>
Explanation:
In the case of an object undergoing projectile motion, such motion is divided in two analysis. The vertical analysis uses kinematic equations associated with an accelerated motion under the constant acceleration of gravity, and the horizontal analysis is that of a uniform motion at constant velocity.
Therefore the projectile motion uses the velocity in the horizontal (x-direction) as constant. and the vertical motion (associated with the y-axis) a motion with acceleration equal to "g".
Then, the corect answer is the one that states:
"<em>VX = constant, and ay = -g</em>"
If the quality of the observations had no effect on the research, then nobody would have to make any observations. They could just sit in the lab, play loud rock music, write down a bunch of numbers, and call them observations. True, there have been scientists who did that. Their research was worthless, and that's why nobody knows or cares about them or their research these days.
No, the quality of the observations IS the quality of the research.
