Kinetic energy is _____.inversely proportional to mass and velocity directly proportional to mass and velocity directly proporti
2 answers:
Answer : The correct option is, directly proportional to mass and velocity.
Explanation:
Kinetic energy : It is associated with the state of motion of an object.
The formula used for kinetic energy is,
where,
m = mass of an object
v = velocity or speed of an object
From the formula of kinetic energy we conclude that,
The kinetic energy is directly proportional to the mass and the velocity of an object.
Hence, the kinetic energy is directly proportional to mass and velocity.
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Given:
initial angular speed, = 21.5 rad/s
final angular speed, = 28.0 rad/s
time, t = 3.50 s
Solution:
Angular acceleration can be defined as the time rate of change of angular velocity and is given by:
Now, putting the given values in the above formula:
Therefore, angular acceleration is: