NCERT Example 5.1 - Work, Energy and Power

Question: Find the scalar product of force F = 3i + 4j - 5k and displacement d = 5i + 4j + 3k, and the angle between them.

Answer: F dot d = **16**; angle = **about 71.3 degrees**.

Full step-by-step NCERT solution with diagrams on Something by Zero.