Physics Measurement Concepts Quiz

<p>Graphically or by using the Pythagorean theorem to find the magnitude and trigonometry to find the direction. (A)</p> Signup and view all the answers

<p>Using a different ruler for each measurement and averaging the results. (C)</p> Signup and view all the answers

<p>Using a stopwatch to time 50 swings and dividing the total time by 50. (C)</p> Signup and view all the answers

<p>Positioning their eye directly perpendicular to the ruler when reading the measurement. (D)</p> Signup and view all the answers

<p>The angle between the two vectors (A)</p> Signup and view all the answers

<p>The car's acceleration. (A)</p> Signup and view all the answers

<p>The total distance travelled. (B)</p> Signup and view all the answers

<p>$14 m$ (C)</p> Signup and view all the answers

<p>It represents the cyclist's displacement, equaling 60 meters. (A)</p> Signup and view all the answers

<p>The object is moving with constant negative acceleration (deceleration). (D)</p> Signup and view all the answers

<p>Systematic error (B)</p> Signup and view all the answers

<p>A systematic error offset (D)</p> Signup and view all the answers

<p>The zero point aligns directly with the starting point of measurement. (A)</p> Signup and view all the answers

<p>They provide more precise measurements of length. (B)</p> Signup and view all the answers

<p>Holding the ruler at an angle to the vertical. (A)</p> Signup and view all the answers

<p>0.9 mm (B)</p> Signup and view all the answers

<p>Vertically, ensuring it's perpendicular to the horizontal surface. (A)</p> Signup and view all the answers

<p>$1 \times 10^2 \text{ cm}^2$ (C)</p> Signup and view all the answers

<p>By subtracting 'x' from each measurement. (C)</p> Signup and view all the answers

<p>0.001 cm (A)</p> Signup and view all the answers

<p>20 $\text{ cm}^2$ (C)</p> Signup and view all the answers

<p>To ensure the jaws exert a consistent force on the object being measured. (A)</p> Signup and view all the answers

<p>30 mm (D)</p> Signup and view all the answers

<p>Measuring a very small height with a ruler that has a significant gap before its zero mark. (B)</p> Signup and view all the answers

<p>A shift in the mean of the measurements away from the true value. (B)</p> Signup and view all the answers

<p>$5.6 \times 10^4$ (C)</p> Signup and view all the answers

<p>2.527 mm (D)</p> Signup and view all the answers

<p>$7 \times 10^{-5}$ (A)</p> Signup and view all the answers

<p>$3 \times 10^{-3} \text{ m}$ (C)</p> Signup and view all the answers

<p>To ensure accurate and consistent readings. (C)</p> Signup and view all the answers

<p>1/2 (D)</p> Signup and view all the answers

<p>The measurement may be inconsistent due to variable pressure. (A)</p> Signup and view all the answers

<p>$6 \times 10^3$ (C)</p> Signup and view all the answers

<p>$v = u + at$ (C)</p> Signup and view all the answers

<p>$10 \text{ m/s}$ (B)</p> Signup and view all the answers

<p>$s = \frac{(u + v)t}{2}$ (C)</p> Signup and view all the answers

<p>$1.53 \text{ s}$ (C)</p> Signup and view all the answers

<p>$s = \frac{1}{2}at^2$ (D)</p> Signup and view all the answers

Observable properties that can be measured, such as length, mass, and time.

Methods used to determine physical quantities accurately and consistently.

Physical quantities that have only magnitude and no direction, like mass and temperature.

Physical quantities that have both magnitude and direction, such as velocity and force.

The vector sum of two or more vectors, accounting for both magnitude and direction.

Calculating the mean of multiple measurements to reduce error and increase accuracy.

Standard quantities used to specify measurements, such as meters for length and seconds for time.

The difference between the measured value and the true value, which can occur in any measurement.

The gradient of the tangent at that point on a speed-time graph.

Measures the distance traveled over a time period.

Speed that remains the same over time with no changes.

Total distance traveled divided by total time taken.

The rate of change of speed over time; can be positive or negative.

The area of a triangle is calculated using the formula: Area = 1/2 × base × height.

The area of Triangle ABC is calculated with the formula: Area = 1 × AB × AC / 2.

The area of Triangle PQR is given by the formula: Area = 1/2 × PQ × SR.

Write numbers in the form of powers of ten with one digit before the decimal.

Express decimals as powers of ten with one figure before the decimal point.

The area of a square is calculated by squaring the length of one side, Area = side × side.

The area of a rectangle equals the product of its length and width, Area = length × width.

Convert fractions such as 1/1000 to a power of ten form, as 10^-3.

Height equals scale reading plus a constant x.

An error introduced by the measurement system affecting all readings consistently.

Error introduced when the zero of a measuring instrument is not at the start of the scale.

Using a ruler at an angle can introduce a systematic error in height measurements.

The ruler must be vertical to accurately measure height without systematic errors.

An area on a ruler where the scale starts after a gap, causing measurement inaccuracies.

The vertical distance from a set reference point to point P above the bench.

The variable x represents a constant offset in height calculations.

A tool used for measuring lengths with high precision, often to 0.001 cm.

An instrument for measuring very small distances, typically down to 0.001 cm.

The process of measuring lengths accurately, often beyond 0.5 mm.

A small sliding scale used in tools like calipers for precise measurement.

Adjusting the micrometer to ensure accurate measurements, typically using a known standard.

Aligning the zero of the millimeter scale with the object end for measurement.

Commonly used dimensions for measurements, often in cm or mm.

A feature in micrometers that ensures uniform gripping force on the object being measured.

Describes motion with constant acceleration, v = u + at.

Acceleration that does not change over time during motion.

Calculates average speed during constant acceleration: s = (u + v)/2 × t.

Links displacement, initial speed, time, and acceleration: s = ut + 1/2 at².

Relates v² to u² and a without time: v² = u² + 2as.