Answer:
a) Vi = 137.2 m/s
b) h = 960.4 m
Explanation:
a)
In order to find the initial speed we will use first equation of motion:
Vf = Vi + gt
where,
Vf = Final velocity = 0 m/s (since ball stops at highest point)
Vi = Initial Velocity = ?
g = - 9.8 m/s² (negative sign for upward moyion)
t = time interval = 14 s
Therefore,
0 m/s = Vi + (-9.8 m/s²)(14 s)
<u>Vi = 137.2 m/s</u>
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b)
Now, we use second equation of motion to find height (h):
h = Vi t + (1/2)gt²
h = (137.2 m/s)(14 s) + (1/2)(-9.8 m/s²)(14 s)²
h = 1920.8 m - 960.4 m
<u>h = 960.4 m</u>
The following are the answers to
the question presented:
<span>a. </span>magnitude of
the radial acceleration = 1.25m/s² inwardly directed
<span>b. </span>tangential
acceleration = 0.400m/s²
<span>c. </span>total
acceleration = 72.25 degrees
I am hoping that these answers
have satisfied your queries and it will be able to help you in your endeavors, and
if you would like, feel free to ask another question.
- Mass=m=44.9kg
- Distance=s=20.5m
- initial velocity=u=0m/s
- Final velocity=v=62m/s
- Force=F
- Acceleration=a
Using third equation of kinematics
Apply Newton's second law
Answer:
The number of crates is 84580.
Explanation:
mass, m = 30 kg
height, h = 0.9 mm
Power, P = 0.5 hp = 0.5 x 746 W = 373 W
time, t = 1 minute = 60 s
Let the number of crates is n.
Power is given by the rate of doing work.
Answer:
it helping
Explanation:
and helping aterials between a capacitors’ plates can change its capacitance