You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 120 N, the sled has an acceleration of 1.7 m/s2 If the sled has a mass of 8.4 kg, what is the mass of your little sister?

Answer 1

If she has mass m, then she is part of the total mass. So

120 = (8.4+m)(1.7)

Now just solve for m.

Answer 2

62.18

Answer 3

facts