Answer:
Explanation:
14 m/s
Explanation:
The motion of the book is a free fall motion, so it is an uniformly accelerated motion with constant acceleration g=9.8 m/s^2 towards the ground. Therefore we can find the final velocity by using the equation:
where
u = 0 is the initial speed
g = 9.8 m/s^2 is the acceleration
d = 10.0 m is the distance covered by the book
Substituting data, we find
1). Frequency = (1/period) = 1/(20sec) = (1/20) per sec .
2). Frequency= (3 waves) / (4 sec) = (3/4) (per sec)
Period = (1/freq) = 1/(3/4 per sec) = (4/3) sec
3). Speed= (freq) x (wavelength) (2 per sec) x (5 m) = (2 x 5) ( m per sec)
Speed doesn't depend on amplitude.
I added individual steps for clarity. Note that g must be positive if the solution is to be real.
Let me know if you have any questions.
The answer is D. Chemical Energy
1)which of the following is not a benefit of stretching
<span>A)Poor circulation </span>
2) Which of the following is NOT an upper body stretch?
<span>C)Straddle Stretch </span>
3) With which of the following activities should you stretch before participating in?
<span>D) All of the above.</span>
