ADDITIONAL PRACTICE 1. In 1994, Leroy Burrell of the United States set what was then a new world record for the men's 100 m run. He ran the 1.00 x 10' m distance in 9.85 s. Assuming that he ran with a constant speed equal to his average speed, and his kinetic energy was 3.40 × 10³ J, what was Burrell's mass? 2. A car has a kinetic energy of 4.32 × 10° J when traveling at a speed of 23 m/s. What is its mass?

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Chapter1: Units, Trigonometry. And Vectors
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ADDITIONAL PRACTICE
1. In 1994, Leroy Burrell of the United States set what was then a new world
record for the men's 100 m run. He ran the 1.00 × 10² m distance in 9.85 s.
Assuming that he ran with a constant speed equal to his average speed, and his
kinetic energy was 3.40 × 10³ J, what was Burrell’s mass?
2. A car has a kinetic energy of 4.32 x 10$ J when traveling at a speed of 23 m/s.
What is its mass?
Transcribed Image Text:ADDITIONAL PRACTICE 1. In 1994, Leroy Burrell of the United States set what was then a new world record for the men's 100 m run. He ran the 1.00 × 10² m distance in 9.85 s. Assuming that he ran with a constant speed equal to his average speed, and his kinetic energy was 3.40 × 10³ J, what was Burrell’s mass? 2. A car has a kinetic energy of 4.32 x 10$ J when traveling at a speed of 23 m/s. What is its mass?
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