A child applies a force parallel to the x -axis to a 10.0-kg sled moving on the

Question

A child applies a force parallel to the x -axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x -component of the force she applies varies with the x -coordinate of the sled as shown in the figure . Calculate the work done by the force when the sled moves from x = 0 to x = 8.0 m. Express your answer using two significant figurs. Calculate the work done by the force when the sled moves from x = 8.0m to x = 12.0 m Express your answer using two significant figurs. Calculate the work done by the force when the sled moves from x = 0 to x =12.0 m Express your answer using two significant figurs.

Explanation / Answer

W is area under the curve wa = 0.5*8*10 = 40 J Wb = 0.5*4*10 = 20J Wc = Wa + Wb = 60J

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.