2. Which statement concerning friction is true? a) Static friction is always opp

Question

2. Which statement concerning friction is true? a) Static friction is always opposite the direction of motion. b) Kinetic friction is always opposite the direction of motion. c) Both static and kinetic friction are always opposite the direction of motion. d) Neither is always opposite the direction of motion.

3. A box is at rest on the flat bed of a moving truck. Dawn applies the brakes abruptly and the box begins to slide. Draw a free-body diagram correctly depicting the forces acting on the box and its resulting motion?

4. CRITICAL THINKING: How can the coefficient of friction be determined (or measured) experimentally? Explain how this could be done for both static and kinetic friction.

Please include formulas used to come up with the answers. Thank you for yuor help.

Explanation / Answer

2.

We know that:

Static friction and Kinetic friction both are always opposite the direction of motion.

So Option C is correct.

Answer.

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