The work done by the force $\vec F=2\hat i-\hat j-\hat k$ in moving an object along the vector $3\hat i+2\hat j-5\hat k$ is:
Answer & explanation
Correct answer: option 3
Work $(2\hat i-\hat j-\hat k).(3\hat i+2\hat j-5\hat k)$ = 9 units
The work done by the force $\vec F=2\hat i-\hat j-\hat k$ in moving an object along the vector $3\hat i+2\hat j-5\hat k$ is:
Correct answer: option 3
Work $(2\hat i-\hat j-\hat k).(3\hat i+2\hat j-5\hat k)$ = 9 units