Forces and Their Effects | Edexcel GCSE Combined Science Physics, Higher tier (1SC0)
Forces and Their Effects
- 44 questions
- 4 subtopics
- Paper 6
- Paper 6
Forces and Their Effects is examined in Paper 6, Physics 2.
It covers contact and non-contact forces, vectors and scalars, and reducing friction, resolving forces and free body diagrams and forces on an object in equilibrium.
Sample questions from Forces and Their Effects
Answer each one closed book first, then open the answer.
-
Contact and non-contact forces
Give an example of two objects interacting through an electrostatic field.
Show the answer
A charged plastic rod attracts small polystyrene balls without touching them. -
Contact and non-contact forces
Give two examples of contact forces.
Show the answer
The normal contact force from a surface and friction between two surfaces. -
Vectors and scalars, and reducing friction
Explain why speed is a scalar quantity but velocity is a vector quantity.
Show the answer
Speed states only how fast something moves, whereas velocity also states the direction of motion. -
Vectors and scalars, and reducing friction
Describe what happens to the friction force at a door hinge after oil is applied to it.
Show the answer
The friction force becomes smaller. -
Resolving forces and free body diagrams
Describe what a scale vector diagram of the forces on an object looks like when that object is in equilibrium.
Show the answer
The arrows drawn end to end form a closed shape that returns to the starting point. -
Resolving forces and free body diagrams
Name the two forces that appear on a free body force diagram of a book resting on a table.
Show the answer
The weight of the book acting downwards and the normal contact force acting upwards. -
Forces on an object in equilibrium
Explain what is meant by balanced forces acting on an object.
Show the answer
The forces cancel each other out, giving a resultant force of zero. -
Forces on an object in equilibrium
A skydiver of weight 700 N experiences an air resistance of 700 N. Explain the effect of these forces on their motion.
Show the answer
The resultant force is zero, so the skydiver falls at a constant velocity.
The 4 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Contact and non-contact forces | Non-contact forces acting through gravitational, electrostatic and magnetic fields with an example of each, contact forces such as the normal contact force and friction, interaction pairs, and why a force is drawn as an arrow. | 11 |
| Vectors and scalars, and reducing friction | Vector and scalar quantities with examples, speed and velocity, mass and weight, distance and displacement, and how lubricants reduce friction in door hinges, engines, bicycle chains and machines. | 11 |
| Resolving forces and free body diagrams | The resultant of two forces, scale vector diagrams, equilibrium shown as a closed vector diagram, resultants of forces along one line, resolving a force into two at right angles, and free body force diagrams for a book, a car and a parachutist. | 14 |
| Forces on an object in equilibrium | Resultant force and balanced forces, calculating a resultant from a push and friction, and objects in equilibrium, including a lift moving steadily, a skydiver at constant velocity, a book on a table and a rope pulled from both ends. | 8 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
-
Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
-
Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
-
Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
Edexcel GCSE Combined Science Physics, Higher tier Active Recall Guide
Every topic, not just this one. 1,449 questions with their answers.