Answer:
kinetic energy will change by a factor of 1/2
Option C) 1/2 is the correct answer
Explanation:
Given the data in the question;
we know that;
Kinetic energy = 1/2.mv²
given that mass of the object is doubled; m1 = 2m
speed is halved; v1 = V/2
Now, New kinetic energy will be; 1/2.m1v1²
we substitute
Kinetic Energy = 1/2 × 2m × (v/2)²
Kinetic Energy = 1/2 × 2m × (v²/4)
Kinetic Energy = 1/2 × m × (v²/2)
Kinetic Energy = 1/2 [ 1/2mv² ]
Kinetic Energy = 1/2 [ KE ]
Therefore; kinetic energy will change by a factor of 1/2
Option C) 1/2 is the correct answer
The book's initial speed = 2.83 m/s
The mass of the textbook, m = 0.75 kg
The final speed of the textbook, v = 0 m/s (Since it comes to rest)
The distance covered by the book, d = 1.2 m
Coefficient of kinetic friction, 
The frictional force between the table and the book is calculated as:
The workdone by the textbook is calculated as:
According to the work-kinetic energy theorem:
Workdone by the book = Change in Kinetic energy
The book's initial speed = 2.83 m/s
Learn more here: brainly.com/question/25459845
Answer:
The speed of light is constant for all observers
Explanation:
As per general postulate of relativity
- Lorentz covariance of special relativity becomes a local Lorentz covariance in the presence of matter.
So
light speed c is independent of States of matter
Answer:
High amplitude is equivalent to loud sounds.
Explanation:
