Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
FORCES AND SHAPE
29 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
4 marks · Hard
Answer and see the solution →A heavy box is pulled to the right along a rough surface by two ropes. Rope X pulls with 120 N and rope Y pulls with 80 N, both horizontally to the right. Friction acts to the left with a force of 150 N. The box experiences no other horizontal forces.
(a)[3 marks]Calculate the resultant horizontal force on the box. State its size and direction.
(b)[1 mark]Explain what will happen to the speed of the box as a result of this force.
Question 2
4 marks · Hard
Answer and see the solution →The diagram shows a metal block at rest on a horizontal table. Several forces act on the block. A downward force of 35 N acts on the block (its weight). The table exerts an upward force of 35 N (normal reaction).
(a)[2 marks]State and explain whether the forces on the block are balanced or unbalanced. Justify your answer using vector ideas.
(b)[2 marks]Describe what will happen to the block if an extra upward force of 10 N is applied to it.
Question 3
4 marks · Hard
Answer and see the solution →A student claims that temperature is a vector quantity. She says this because temperature can rise or fall, and you can measure how quickly it changes.
(a)[2 marks]Explain, with reasons, whether temperature is a vector or scalar quantity.
(b)[2 marks]Give two reasons why force is a vector quantity and not a scalar quantity.