18. Find the work done in moving an object along a vector r = 3i + 2j - 5k if the applied force is F = 2i - j - k. Scalars and Vectors problem no 18. Sindh Textbook Board (stb) problems

18. Find the work done in moving an object along a vector r = 3i + 2j - 5k if the applied force is F = 2i - j - k.