Answer:
A) against the breeze at 2 m/s
Explanation:
Given that air is blowing at 2 m/s.An a mosquito eat lunch.If mosquito want to eat lunch he have to move opposite to the direction of air because air is blowing at 2 m/s.So we can say that mosquito have to move against the air.
But in we have to protect our self from mosquito because if any mosquito bite us then it may lead to fever .So the protection is very important from mosquito .
Therefore the answer is --
A
Answer:
Explanation:
Given
mass of tree stump is 
mass bullet is 
velocity of bullet is 
Conserving momentum for bullet and tree stump
Initial Momentum 
Suppose
is the velocity of the system
Final Momentum 
Initial momentum =Final Momentum


Should be 1.4, I hope this helps you out