Question

A 40-kg boy is sliding on a horizontal and frictionless surface with an initial momentum of 90J due east. When t=0, a force, as the friction of time, F=8.20t is applied to the boy due west. a.)At what value of t will result in the momentum of the boy 60J due west? b.)What is the acceleration of the boy at that time computed in (a)?

Answer 1

Answer:

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Explanation:

When t=0, a force, as the friction of time, F=8.20t is applied to the boy due west. a.)At what value of t will result in the momentum of the