10 Questions
What instrument is accurate for one specific measurement?
Pipette
Which instrument is used to measure time reading to 0.1s or better?
Digital Timers
What is defined as the distance traveled per unit time?
Speed
Which physical quantity has magnitude only?
Time
What is the equation for speed?
$v = \frac{d}{t}$
What is the equation for speed?
$v = \frac{d}{t}$
Which instrument is used to measure time reading to 0.1s or better?
Digital Timers
Which physical quantity has magnitude and direction?
Force
What is defined as the speed in a given direction?
Velocity
Which instrument is accurate for one specific measurement?
Pipette
Study Notes
Measurement and Motion
- A stopwatch is accurate for one specific measurement, which is time, and can measure time reading to 0.1s or better.
Speed and Velocity
- Speed is defined as the distance traveled per unit time.
- The equation for speed is distance ÷ time.
- Velocity, on the other hand, is defined as the speed in a given direction.
- Velocity is a physical quantity that has both magnitude and direction.
Scalars and Vectors
- Speed is a scalar quantity, which means it has magnitude only.
Test your knowledge of physical quantities and measurement techniques with this quiz. Learn about measuring liquids with a measuring cylinder and pipette, time with clocks and digital timers, length with metre rule, micrometer screw gauge, and vernier caliper, and volume through displacement.
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