remedial Quiz 4

Which statement is not true?

• Precise measurements are always accurate

• Precise measurement can be inaccurate

• Accurate measurement is always precise

• inaccurate measurement can be precise

Uncontrolled changes in air pressure while determining the boiling point of a liquid give rise to

• personal error

• relative error

• random error

• systematic error

It represents how close or consistent the independent measurements of the same quantity are to one another.

• Precision

• Uncertainty

• Error

• Accuracy

The way of expressing the errors is called ________.

• Precision

• Uncertainty

• Error

• Accuracy

A cart initially at rest starts to roll down an inclined plane with a constant acceleration of 4m/s². What is its velocity after 9s?

A truck travels at an average velocity of 15m/s. How long will it take the truck to cover a distance of 20km? Round off in 2 decimal places.