What are the son's role in strengthening family relationship

They are to provide, nurture, protect, and preside for their family. Asking your son to provide, or expecting your daughter to nurture her siblings (so you don't have to), creates an imbalance and unfair exceptions and pressures.

a. formula: f=ma or f/m=a

10,000n/1,267kg≈7.9m/

b. formula: a= and s=d/t

speed= 394.6/15

s=26.3m/s

a=

a=1.75m/

c. 7.9-1.75=difference of 6.15m/

d. the force that most likely caused this difference is friction forces

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your welcome.