Answer: t = 10s
Explanation:
Assuming there's no air resistance,
Initial velocity (u) = 0 m/s
Acceleration by gravity (a) = 9.81 m/s^2
Displacement (s) = 500m
Time taken (t) = ?
Now,
Use formula,
s = u×t + (1/2)×a×t^2
s = 0×t + (1/2)×9.81×t^2
500 = 4.905×t^2
t = 10s
Answer:
C
Explanation:
The mechanical advantage is always less than 1 because the force needed to move an object is always greater than the weight of the object.
The loss of species of organisms is due to loss of their habitat.
If you went through a city and cut all the houses down to their
foundations, the people who lived in them would either die or
go somewhere else if they could.
Speed of man towards West =2.5 m/s
Time to travel in the given direction = 1200 s
Total displacement towards west
Now speed of man towards East = 1 m/s
time to travel in east direction = 500 s
total displacement towards East
Now total displacement will be
so it is 2500 m towards west
If pulse travels on a taut string, it may or may not invert upon reflection because it is one that tends to depends on the place the wave reflects.
Hence, If reflecting is obtained from a less dense string, the reflected part of the wave will tend to be from be right side up. A wave inverts if only it reflects off via a means in which the wave speed is said to be smaller.
<h3>When a wave pulse on a string reflects?</h3>
If a pulse on string is said to show or reflects from free end, the outcome of the resultant pulse is said to be made in such a way that the said slope of string is seen at free end is zero.
Therefore, If pulse travels on a taut string, it may or may not invert upon reflection because it is one that tends to depends on the place the wave reflects. If reflecting is obtained from a less dense string, the reflected part of the wave will tend to be from be right side up. A wave inverts if only it reflects off via a means in which the wave speed is said to be smaller.
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