Answer:
B) her moment of inertia increases and her rotational kinetic energy decreases.
Explanation:Moment of Inertia is the term used to describe the rotation of an object in relationship to its own rotation,IT IS THE PRODUCT OF MASS AND THE SQUARE DISTANCE COVERED.
Moment of Inertia is also a resistance force which tend to oppose the impact of a turning force aimed at preventing its rotation about its axis. As the moment of Inertia increases her rotational kinetic energy will continue to decrease,due to the impact of the resistant or opposing force.
Answer:
brainly.com/question/11848211
^ Similar/same question as yours!
The pressure between two costs is proportional to the product of the charges.
If solely one of the expenses is decreased by way of a element of 3, then the pressure is decreased with the aid of a thing of 3.
If each prices are reduced by a thing of 3, then the pressure is reduced via a issue of 9.
Answer:
0.2s
Explanation:
Given parameters:
Speed = 25m/s
Distance = 5m
Unknown:
Time taken for Juan to get to his work = ?
Solution:
To solve this problem we use the relationship below:
Speed =
Time =
So;
Time =
= 0.2s
Answer:
The deceleration of the dragster upon releasing the parachute such that the wheels at B are on the verge of leaving the ground is 16.33 m/s²
Explanation:
The additional information to the question is embedded in the diagram attached below:
The height between the dragster and ground is considered to be 0.35 m since is not given ; thus in addition win 0.75 m between the dragster and the parachute; we have: (0.75 + 0.35) m = 1.1 m
Balancing the equilibrium about point A;
F(1.1) - mg (1.25) = 
- 1200(9.8)(1.25) = 1200a(0.35)
- 14700 = 420 a ------- equation (1)
--------- equation (2)
Replacing equation 2 into equation 1 ; we have :

1320 a - 14700 = 420 a
1320 a - 420 a =14700
900 a = 14700
a = 14700/900
a = 16.33 m/s²
The deceleration of the dragster upon releasing the parachute such that the wheels at B are on the verge of leaving the ground is 16.33 m/s²
Answer:
<h2>3</h2>
Explanation:
Using the efficiency formula. Efficiency = MA/VR * 100%
MA = Mechanical Advantage
VR = velocity ratio = 
Distance moved by effort = 4.5m
distance moved by load = 1.5m
VR = 4.5/1.5 =3
Assuming efficiency is 100% (since friction can be ignored)
100% = MA/3 * 100%
1 = MA/3
MA = 3*1
MA = 3
Mechanical Advantage of the ramp is 3