Answer:
Explanation:
The car is rolling without slipping so Vcm= R×ω = 0.325×49 = 16
The answer is actually 1 & 17, maybe you meant to put 1&17 as option b
Sound must travel through a medium/body. Space is a vacuum so there is no medium/body for sound to travel through, so there is no sound.
Answer:
A. α = - 1.047 rad/s²
B. θ = 14.1 rad
C. θ = 2.24 rev
Explanation:
A.
We can use the first equation of motion to find the acceleration:
where,
ωf = final angular speed = 0 rad/s
ωi = initial angular speed = (30 rpm)(2π rad/1 rev)(1 min/60 s) = 3.14 rad/s
t = time = 3 s
α = angular acceleration = ?
Therefore,
<u>α = - 1.047 rad/s²</u>
B.
We can use the second equation of motion to find the angular distance:
<u>θ = 14.1 rad</u>
C.
θ = (14.1 rad)(1 rev/2π rad)
<u>θ = 2.24 rev</u>
All of the factors that need to be considered when determining an object's terminal velocity are the object's weight and area it presents, as well as air density.
<em>option </em><em>C </em><em>is the correct answer</em>
<h3>What is terminal velocity?</h3>
Terminal velocity is obtained when the speed of a moving object is no longer increasing or decreasing. That is the object's acceleration (or deceleration) is zero.
Mathematically, the formula for terminal velocity is given as;
V = √(2mg)/(ρAC)
where;
- m is the mass of the falling object
- g is the acceleration due to gravity
- ρ is the density of the fluid through which the object is falling
- A is the projected area of the object
- C is the drag coefficient
Thus, the variables to consider in determining terminal velocity of an object incudes the area, density of air, mass, etc.
Learn more about terminal velocity here: brainly.com/question/25905661
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