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A sled with mass 8.00 kg moves in a straight line on a
Chapter 3, Problem 23E(choose chapter or problem)
A sled with mass 8.00 kg moves in a straight line on a frictionless horizontal surface. At one point in its path, its speed is \(4.00 \mathrm{~m} / \mathrm{s}\); after it has traveled 2.50 m beyond this point, its speed is \(6.00 \mathrm{~m} / \mathrm{s}\). Use the work-energy theorem to find the force acting on the sled, assuming that this force is constant and that it acts in the direction of the sled's motion.
Questions & Answers
QUESTION:
A sled with mass 8.00 kg moves in a straight line on a frictionless horizontal surface. At one point in its path, its speed is \(4.00 \mathrm{~m} / \mathrm{s}\); after it has traveled 2.50 m beyond this point, its speed is \(6.00 \mathrm{~m} / \mathrm{s}\). Use the work-energy theorem to find the force acting on the sled, assuming that this force is constant and that it acts in the direction of the sled's motion.
ANSWER:Step 1 of 2
As per the question, the mass of the sled, \(m=8 \mathrm{~kg}\)
Initial velocity of the sled, \(\mathrm{u}=4 \mathrm{~m} / \mathrm{s}\)
Final velocity of the sled, \(v=6 \mathrm{~m} / \mathrm{s}\)
The distance travelled, \(\mathrm{S}=2.50 \mathrm{~m}\)