Here are the positions at three different times for a bee in flight(a bee's top speed is about 7 m/s).
1 answer:
Answer:
(a) see attachment below
(b) see attachment below
(c) the average velocity in part (a) is a better estimate than that in part (b) because it was calculated for a shorter time interval compared to part (b). The basically definition of instantaneous velocity is that it is the limit of the average velocity as the time interview approaches zero (that is as the time interview becomes smaller and smaller). In other words the shorter the time interview the better the accuracy of the result.
(d) see attachment below.
Explanation:
Check the attachment below for the full solution of this problems.
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Answer:
4.69 s
Explanation:
u = Initial velocity = 30 m/s
= Angle of launch =
g = Acceleration due to gravity =
Time taken by the projectile to land is given by
The time the projectile is in the air before it contacts the ground again is 4.69 s.
Answer:
It will double.
Explanation:
Newton's Law of Gravity states that , where G is the gravitational constant, <em>r</em> is the distance between the objects' centers, and
and
are the objects' masses. We just have simple math here: by doubling
, we double the entire fraction. By doubling the entire fraction, we double the gravitational pull. Therefore, <em>Newton's Law of Gravity states that if the mass of one object doubles, the gravitational pull on a second object will </em><em>double</em><em>.</em>
I hope this helps you understand it! Have a great day, 'kay?