Briefly describe what is meant by floating head pressure and tell why it is used in refrigerantion and air conditioning system..

u=13

v=30

s/t=u+1\2at

=13+431/2

=13+265.5

=278.5

you cant move and you feel like someones pushing you down onto your bed it can feel like you want to get up but you just can't it can be extremely scary

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s