Jake drops a book out of a window from a height of 10 meters. At what velocity does the book hit the ground?
1 answer:
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Answer:
a) Knowns, initial speed , final speed
and gravity due it is a constant
b) The maximum high reached by the dolphin is
c) Total time is
Explanation:
a) First of all the initial speed is given at the start of the problem, gravity is constant and final speed is known any object thrown straight up reaches its max high at speed.
b) Second, now that we know final speed we use , as we clear for
.
Then we use
c)Third, finally we can use , as we know
when the dolphin fall into the water again and
, then we have
is a quadratic form
so we have
and
Answer:
a
b
Explanation:
From the question we are told that
The spring constant is
The maximum extension of the spring is
The number of oscillation is
The time taken is
Generally the the angular speed of this oscillations is mathematically represented as
where T is the period which is mathematically represented as
substituting values
Thus
this angular speed can also be represented mathematically as
=>
substituting values
In SHM (simple harmonic motion )the equation for velocity is mathematically represented as
The velocity is maximum when
=>
=>
=>