Question

what is the momentum of a child, a dog and a wagon if the child has a mass of 12kg, the dog 9kg, and the wagon 15 kg when the childs father pulls the wagon at 2 meter per second velocity

Answer 1

Explanation:

18 g = 9.80 m/s2, m = 18181.81 kg, w = ?, w =mg w = 18181.81(9.8) = 178181.74 N

19 g = 9.80 m/s2, w = 10168.25 N, w=mg,

m = 1037.58 kg

20 g = 9.80 m/s2, m= 1.76, w=?, w = 17.25 N

21 g = 9.80 m/s2, m = 29,545 kg, w=mg,

w = 289541 N

22 g = 9.80 m/s2, w = 648, w=mg, m=66.12 kg

23 g = 9.80 m/s2, gSUN = 274 m/s2, 274/9.8 = 27.96 gEARTHs

24 g = 9.80 m/s2, 0.37gEARTH = 0.37(9.80) = 3.63 m/s2.

25 g = 9.80 m/s2, a = 185 m/s2, 185/g = 18.76 gs

26 vo = 38 m/s, v = 0, t = 0.1 s, a =? in gs

v=vo + at, 0 = 38 +a(.1), a =-380 m/s2,

380 m/s2/9.80 m/s2 = 38.78 gs !!!

27 vo = 0, v = 32 m/s, t = 4.2, a =?

v=vo + at, 32 = 0 +a(4.2), a =7.62 m/s2,

7.62 m/s2/9.80 m/s2 = 0.78 gs