Father and son are standing next to each other on ice skates on :frictianless\"
ID: 1468010 • Letter: F
Question
Father and son are standing next to each other on ice skates on :frictianless" ice. The father purhes the son, which gives the son some velocity. Using the law of conservation of momentum. The father's velocity. Father"s velocity is less in value and in the opposite direction from the son's Father's velocity is less in value and in the same direction as the son's Father's velocity is greater in value and in the opposite direction from the son's. Father's velocity is greater in value and in the same direction as the son's.Explanation / Answer
15) Correct option is (a)
From conservarion of momentum
0 =mfvf+msvs
mfvf = -msvs
mf>ms so vf<vs and opposite
16) Correct option is (a)
m =4 kg, p =12kg.m/s
v =p/m = 12/4 =3 m/s
17) COrrect option is (c)
F =5 N , m =3 kg, u =9 m/s v =3 m/s
impulse = mv -mu = 3(3-9) = -18 kg.m/s
18) Correct option is (c)
From conservation of momentum
m1u1 +m2u2 =(m1+m2)v
v = (1*1)/(1+5) = 1/6 m/s
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