Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Units (Forces and Motion)
84 practice questions
Practice questions
81–84 of 84
Question 81
4 marks · Hard
Answer and see the solution →The table below shows several situations or objects. For each, write the SI unit for the quantity shown, using the correct symbol. An example (row 1) is completed for you.
Physical Quantities and Their SI Units Situation / Object Quantity SI unit (name) SI unit (symbol) A car travels 25 metres in 5 seconds. distance metre m A weight-lifter applies a force to raise a barbell. force A moving hockey puck has momentum. momentum A lever turns about a pivot because of a turning force. moment (of a force) An object accelerates at a certain rate. acceleration Complete only the last four rows of the table.
Question 82
2 marks · Exam Level
Answer and see the solution →State the SI unit (name and symbol) for each of the following physical quantities: (i) Turning effect of a force (ii) Acceleration
Question 83
2 marks · Exam Level
Answer and see the solution →A student writes the following physical quantity and its unit: 'momentum: newton (N)'. Identify the mistake, and state the correct SI unit and symbol for momentum.
Question 84
2 marks · Exam Level
Answer and see the solution →A laboratory experiment measures a force of 6 newtons acting on a mass of 2 kilograms. State the SI unit (name and symbol) that should be used for expressing the ratio of force to mass, and write its value for this experiment.