Answer:
Initial Velocity = 0 m/s
Final Velocity = 34.6 m/s
time = 3.5 s
Explanation:
The initial velocity must be zero since, the egg must be at rest initially, before dropping.
<u>Initial Velocity = 0 m/s</u>
Now, for time we use 2nd equation of motion:
h = Vi t + (1/2)gt²
where,
h = Height = 61 m
Vi = Initial Velocity = 0 m/s
g = 9.8 m/s²
t =time = ?
Therefore,
61 m = (0 m/s)(t) + (1/2)(9.8 m/s²)t²
t² = (61 m)(2)/(9.8 m/s²)
t = √(12.45 s²)
<u>t = 3.5 s</u>
Now, for final velocity we will use 1st equation of motion:
Vf = Vi + gt
Vf = 0 m/s + (9.8 m/s²)(3.5 s)
Vf = 34.6 m/s
"Density" is the ratio of two numbers ... the mass AND the volume of a piece of some material.
If you only have one number, then the density of it is like one scis, or one tweez, or the sound of one hand clapping, or one pant.
The gravitational field strength creates forces on mass by pulling it towards the centre the equation is weight=mass*gravitational field strength
Answer:
a
because the mechanical wave is when it goes over and over again
The woman's average velocity can be calculated by dividing the total distance covered during the motion by the total time of the motion.
In the first part of the motion, the woman moved south with speed v1=2.00 m/s for a time of

therefore the distance she covered is

In the second part of the motion, she moved north for

in a time of

Since she moved in the opposite direction, the total distance covered is the difference between S1 and S2:

(south)
While the total time of the motion is

Therefore, the woman's average velocity is

(south)
and the correct answer is A).