Physical Quantities & Measurement

In an experiment, a ball is rolled down a curved track that is about half a metre long.

Which measuring device should be used to measure the length accurately?

• metre rule

• micrometer

• tape measure

• vernier calipers

What is the reading on this micrometer?

• 5.43 mm

• 6.63 mm

• 7.30 mm

• 8.13 mm

A quantity is quoted as having a value of 6.2 ms.

In what units is it measured?

• metres

• metres per second

• microseconds

• milliseconds

The diagram shows one method of measuring the diameter of a beaker.

What is the diameter of the beaker?

• 4.5 cm

• 5.0 cm

• 5.5 cm

• 8.0 cm

The diagram shows arrows representing two vector quantities.

Which diagram shows the resultant R of these two vectors?

• 
• 
• 
• 

Which set of quantities are all vectors?

• acceleration, displacement, velocity

• chemical energy, mass, power

• extension, force, gravitational potential energy

• weight, kinetic energy, work

During an experiment to find the density of a stone, the stone is lowered into a measuring cylinder partly filled with water.

Which statement is correct?

• The difference between the readings gives the density of the stone.

• The difference between the readings gives the volume of the stone.

• The final reading gives the density of the stone.

• The final reading gives the volume of the stone.

The diagram shows a micrometer scale.

Which reading is shown?

• 5.64 mm

• 7.14 mm

• 7.16 mm

• 7.64 mm

Which is a scalar quantity?

• mass

• force

• velocity

• weight

The diagram shows a stopwatch.

What is the reading on the stopwatch?

• 30.6 s

• 33.0 s

• 36.0 s

• 36.6 s