The answer is two (4 -3)
Zero is not a SF
Answer:
man will move in opposite direction with speed
Explanation:
As we know that man is lying on the friction-less surface
so here net force along the surface is zero
so if we take man + stone as a system then net change in momentum of this system will become zero
so here we have
here we have
Answer:
Explanation:
The Newton's law in this case is:
Here, is the air temperture, C and k are constants.
We have
in
So:
And we have in , So:
Now, we have:
Applying (1) for :
Applying (1) for :
Answer:
56km
Explanation:
168 ÷ 240 = 0.7
0.7 × 80 = 56km
240 is the amount of minutes in 4 hours.
We divided 168 by 240 to get the distance covered in 1 minute. Afterwards, we needed 80 minutes so we multiplied the answer by 80.