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The length of the new runway In terms of (L) is 4L.
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"In terms of (L) , what must be the length of the new runway?"
The given parameters;
- length of the runway, = L
- let the take off speed = V₁
For the newly designed planes;
the take off speed is double of the original = 2V₁
the acceleration for both take is constant = a
The take off speed for the given constant acceleration is given as;

The length of the new runway In terms of (L) is calculated as follows;

Thus, the length of the new runway In terms of (L) is 4L.
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Answer:
The value is 
Explanation:
From the question we are told that
The mass of the Ping-Pong is 
The terminal speed is 
The drag force is 
Generally the resultant force on the Ping- Pong is mathematically represented as

when terminal velocity is attained , the resultant force is zero so

=> 
=> 
=> 