Cody is painting the front door of his house. The dimensions of the door are 80 inches by 36 inches by 2 inches. If he paints al
1 answer:
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The velocity of the particle is given by
Since and
, we get
Similarly, the position function is obtained via
We know and we're told that
, so
making the answer A.
The speed of wind and speed of plane in still air are 23 and 135 km/h respectively.
<u>Step-by-step explanation:</u>
Let the speed of wind and speed of plane in still air are w and p km/h respectively.
The effective speed on onward journey was
................(1)
The effective speed on return journey was
..............(2)
Adding equation (1) and equation (2) we get,
⇒
⇒
⇒
Putting value of in
we get:
⇒
⇒
⇒
Therefore ,The speed of wind and speed of plane in still air are 23 and 135 km/h respectively.