1. Fill in the Blanks : (i) ......is the branch of mechanics which relates to bodies at rest. (ii) .......is the branch of mechanics which deals with bodies in motion. (iii) ......deals with the motion of the bodies without any reference to the cause of motion. (iv) ......deals with relationship between forces and the resulting motion of bodies on which they act. (v) ......is the term applied to the linear dimensions of a straight or curved line. (vi) The external force per unit area, or the total force divided by the total area on which it acts, is known as...... (vii) The amount of matter contained in a body is called its...... (viii) ...... \( = \) torque \( \times \) angle. (ix) The rate of doing work is called......

Sure, here are the filled-in blanks with the appropriate terms: 1. **Fill in the Blanks:** (i) **Statics** is the branch of mechanics which relates to bodies at rest. (ii) **Dynamics** is the branch of mechanics which deals with bodies in motion. (iii) **Kinematics** deals with the motion of the bodies without any reference to the cause of motion. (iv) **Dynamics** deals with the relationship between forces and the resulting motion of bodies on which they act. (v) **Length** is the term applied to the linear dimensions of a straight or curved line. (vi) The external force per unit area, or the total force divided by the total area on which it acts, is known as **pressure**. (vii) The amount of matter contained in a body is called its **mass**. (viii) **Work** \( = \) torque \( \times \) angle. (ix) The rate of doing work is called **power**. --- **Summary of Answers:** 1. - (i) Statics - (ii) Dynamics - (iii) Kinematics - (iv) Dynamics - (v) Length - (vi) Pressure - (vii) Mass - (viii) Work - (ix) Power