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A car is travelling at a constant speed in a straight line along a horizontal road - Edexcel - A-Level Physics - Question 5 - 2023 - Paper 1
Question 5
A car is travelling at a constant speed in a straight line along a horizontal road. Which row of the table gives a Newton's third law pair of forces? Force 1 Force ... show full transcript
Worked Solution & Example Answer:A car is travelling at a constant speed in a straight line along a horizontal road - Edexcel - A-Level Physics - Question 5 - 2023 - Paper 1
Step 1
Which row of the table gives a Newton's third law pair of forces?
Answer
To identify a Newton's third law pair of forces, we must recall that these forces act on two different objects and are equal in magnitude but opposite in direction.
In option B, we have:
- Force 1: Normal force of the car on the road
- Force 2: Normal force of the road on the car
This accurately illustrates Newton's third law, as the normal force exerted by the car on the road is balanced by an equal and opposite force exerted by the road on the car. Thus, option B is the correct answer.