20 kg*m/s because there is 2 kg mass and 10 m/s so you can multiply.
We will first record its mass and then its volume by measuring its dimensions
then divide mass by volume and will get density of regular solid
Answer:

Explanation:
Given that
The speed of the airplane ,v= 142 m/s
The speed of the air ,u = 30 m/s
Lets take angle make by airplane from east direction towards north direction is θ .
Now by using diagram ,we can say that

Now by putting the values in the above equation we get



Therefore the angle will be 12.19° .