Answer:112.82 m/s
Explanation:
Given
range of arrow=68 m

as the arrow travels it acquire a vertical velocity 

-------1
Range is given by
R=ut
where u=initial velocity


substitute the value of t in eqn 1

--------2
and 

substitute it in 2


u=112.82 m/s
E, there is no state of matter that has no particle motion, however a solid's particles are only vibrating.
Answer:
Newton/square meters=70 AND Pascal=70
Explanation:
Formula:multiply the pressure value by 1.
Answer:
A. 
B. 
C. 
Explanation:
Given:
- spring constant,

- mass attached,

A)
for a spring-mass system the frequency is given as:



B)
frequency is given as:



C)
Time period of a simple harmonic motion is given as:


Centripetal force = (mv^2)/r
so r = (mv^2)/ force = 246500 / 1100 = 224 m