2.7 m/s2 average acceleration of a northbound subway train
Answer:
The kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
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Explanation:
Hope this helps dude
"<span>The strength and duration of the wind controls size and frequency" is the one statement among the following choices given in the question that is true about surface waves. The correct option among all the options that are given in the question is the first option. I hope that the answer has come to your desired help.</span>
Kinetic energy = 1/2 mv²
so, you will have to do it for every single one of them if you want steps.
Kinetic Energy = For A, 202500J
For B, 90000J
For C, 168750J
For D, 75000J
From the above we an say that kinetic energy is highest in option A.
In case, there are no steps needed, just by the values we are able to understand the answer as in Option A, eventhough the mass is the same, higher the velocity or speed, higher the kinetic energy