A body of mass 1 kg begins to move under the action of a time dependent force F = (2t i^ – 3t^2j^​) N, where i^ and j^​ are unit vectors along x and y axis. What power will be developed by the force at the time (t)?

A body constrained to move along the z-axis of a coordinate system is subjected to a constant force given by F = -i + 2j + 3 k N, where i, j, k are unit vectors along the x-, y-, and z axes

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A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F = - i ^ + 2 j ^ + 3 k ^ N where i ^ , j ^, k ^ are unit vectors along the x, y and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4 m along the z-axis ?

A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F = - i ^ + 2 j ^ ​ + 3 k ^ N where i ^ , j ^ ​ , k ^ are unit vectors along the x-, y- and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4 m along the z-axis ?