Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Density and Pressure
72 practice questions
Topics covered
Practice questions
21–30 of 72
Question 21
2 marks · Easy
Answer and see the solution →A force of 150 N acts at right angles on an area of 0.5 m². Calculate the pressure exerted. Give your answer in pascals.
Question 22
1 mark · Easy
Answer and see the solution →Object Force (N) Area (m²) A 400 0.8 B 300 0.5 C 200 0.2 D 600 2.0 Which object exerts the greatest pressure on the ground?
- A.A
- B.B
- C.C
- D.D
Question 23
1 mark · Easy
Answer and see the solution →Give one example of how understanding pressure under a solid is useful in everyday life.
Question 24
2 marks · Easy
Answer and see the solution →A brick weighing 120 N rests flat on the ground with one face of area 0.3 m². Calculate the pressure it exerts on the ground.
Question 25
1 mark · Easy
Answer and see the solution →A metal spike is driven into the ground with a force. Explain why its pointed end helps it go in more easily.
Question 26
2 marks · Easy
Answer and see the solution →(a)[1 mark]Write the equation linking pressure, force and area. Use standard symbols.
(b)[1 mark]What is the pressure produced by a force of 50 N acting on an area of 0.25 m²? Show your working.
Question 27
1 mark · Normal
Answer and see the solution →State the equation linking pressure, force and area for a solid surface. Use standard symbols.
Question 28
2 marks · Normal
Answer and see the solution →A student pushes a box with a force of 180 N onto the floor. The area of contact between the box and the floor is 0.6 m². Calculate the pressure exerted by the box on the floor.
Question 29
3 marks · Normal
Answer and see the solution →A metal plate rests on soft ground. The plate has a weight of 600 N and covers an area of 0.75 m².
(a)[2 marks]Calculate the pressure the plate exerts on the ground. Give your answer in Pa.
(b)[1 mark]Explain how the pressure would change if the area of the plate were halved, but the weight stayed the same.
Question 30
2 marks · Normal
Answer and see the solution →Explain, using the pressure equation, why a sharp knife is easier to use for cutting than a blunt knife.