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Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the fastest accelerating animals, for it can go from rest to 29.0 m/s in 5.15 s. If its mass is 102 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in (a) watts and (b) horsepower. (a) Number i (b) Number Save for Later i Units Units Attempts: 0 of 3 used Submit Answer

Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the fastest accelerating animals, for it can go from rest to 29.0 m/s in 5.15 s. If its mass is 102 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in (a) watts and (b) horsepower. (a) Number i (b) Number Save for Later i Units Units Attempts: 0 of 3 used Submit Answer

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EXAMPLE 13 | The Physics of a Compound Bow Find the work that the archer must do in drawing back the string of the compound bow in Animated Figure 6.20a from 0 to 0.500 m. Reasoning The work is equal to the colored area under the curved line in Animated Figure 6.20b. For convenience, this area is divided into a number of small squares, each having an area of (9.00 N)(2.78 × 10-2 m) = 0.250 J. The area can be found by counting the number of squares under the curve and multiplying by the area per square. Solution We estimate that there are 242 colored squares in the drawing. Since each square represents 0.250 J of work, the total work done is W = (242 squares) When the arrow is fired, part of this work is imparted to it as kinetic energy. 0.250 J squares = 60.5 J
Transcribed Image Text:EXAMPLE 13 | The Physics of a Compound Bow Find the work that the archer must do in drawing back the string of the compound bow in Animated Figure 6.20a from 0 to 0.500 m. Reasoning The work is equal to the colored area under the curved line in Animated Figure 6.20b. For convenience, this area is divided into a number of small squares, each having an area of (9.00 N)(2.78 × 10-2 m) = 0.250 J. The area can be found by counting the number of squares under the curve and multiplying by the area per square. Solution We estimate that there are 242 colored squares in the drawing. Since each square represents 0.250 J of work, the total work done is W = (242 squares) When the arrow is fired, part of this work is imparted to it as kinetic energy. 0.250 J squares = 60.5 J
Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the fastest accelerating animals, for it can go from rest to 29.0 m/s in 5.15 s. If its mass is 102 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in (a) watts and (b) horsepower. (a) Number i (b) Number Save for Later Units Units Attempts: 0 of 3 used Submit Answer
Transcribed Image Text:Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the fastest accelerating animals, for it can go from rest to 29.0 m/s in 5.15 s. If its mass is 102 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in (a) watts and (b) horsepower. (a) Number i (b) Number Save for Later Units Units Attempts: 0 of 3 used Submit Answer
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