The number 76.85 is rounded off up to two significant figures as_____________?
Correct answer: B. 77
- A. 76.8
- B. 77
- C. 76.9
- D. None of these
Explanation
To round 76.85 to two significant figures, retain 7 and 6 and inspect the next digit, 8. Since 8 is at least 5, 6 rounds up to 7, giving 77. Students may choose 76.9 by rounding to three significant figures instead of two.
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About Displacement and Velocity
Displacement is the directed change in position, while velocity is the rate of change of displacement and includes both magnitude and direction. The topic connects position-time and velocity-time graphs with average and instantaneous values, and distinguishes displacement from distance and velocity from speed.
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