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Answers to Quiz No. 1

Answers to Quiz No. 1. Set A. A. BALANCED FRICTION ACCELERATION INERTIA DIRECT. B. 3RD 3RD 2ND 1ST 3RD. C. 1 check each (given, solution, equation, and answer) 4 points every problem Total of 20 points for part C Incorrect symbol in the equation will be marked wrong. C.

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Answers to Quiz No. 1

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  1. Answers to Quiz No. 1 Set A

  2. A. • BALANCED • FRICTION • ACCELERATION • INERTIA • DIRECT

  3. B • 3RD • 3RD • 2ND • 1ST • 3RD

  4. C. • 1 check each (given, solution, equation, and answer) • 4 points every problem • Total of 20 points for part C • Incorrect symbol in the equation will be marked wrong

  5. C. • Corresponding quantity must be written in the GIVEN. • No point will be given for incorrect unit in the final answer.

  6. Problem 1 Given: S = 343 m/s t = 2.5 s d = ? Eqt’n: d = St Solution: d = (343 m/s) (2.5s) Answer: 857.5 m

  7. Problem 2 Given: F = 600 N a = 15 m/s2 m = ? Equation: m = F Solution: m = 600 N Answer: m = 40 kg 15 m/s2 a

  8. Problem 3 Given: F = 5000 N m = 1200 kg a = ? Equation: a = F Solution: a = 5000 N Answer: a = 4. 17 m/s2 1200 kg m

  9. Problem 4 Given: S = 50 km / hr  13.89 m /s t = 10 s  0.0028 hr d =? Equation: d = St

  10. Problem 4 Solution: d = (13.89 m/s) (10s) Answer: d = 138.90 m Solution: d = (50 km/hr) (0.0028 hr) Answer: d = 0. 14 km  138.89 km

  11. Problem 5 Given: a = 5 m/s2 m = 1000 kg F = ? Eqt’n: F = ma Solution: F =(1000 kg) (5 m/s2) Answer: F = 5000 N

  12. Bonus Solution: m = F = 147 N Answer: m = 15 kg a 9.8 m/s2

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