Physics · Friction
While discussing friction, a teacher gave a number of examples to explain the concept. Some of the examples where friction is useful in our day-to-day life are given below: A. We are able to write because of friction between the tip of the pen and the paper. B. We are able to walk because of friction between our feet and the ground. C. A ball thrown vertically upwards comes back to us due to friction. D. We are able to stop a moving vehicle by applying brakes because of friction. Which of the above are correct examples?
- 1A, B and C
- 2B, C and D
- 3C, D and A
- 4D, A and B✓
Correct answer
D, A and B
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