Correct answer only ! i cannot retake this and i need all correct answers !

four 3 ω resistors placed in series would provide a resistance that is equivalent to one ω resistor.

Yes you are correct...I dont think you need to do this? You are getting them all right but now your just wasting points..

But anyways you are correct. ♡♡

f=ma newton's second law 7x8=56n

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