A wooden block is placed on a table top. Name the forces acting on the block and draw a neat and labelled diagram to show the point of application and direction of these forces.

Newton's first law includes:

1. the definition of inertia
2. the definition of force
3. both (a) and (b)
4. none of the above

The property of an object by virtue of which it tends to retain its state of rest or of motion is called —

1. friction
2. inertia
3. force
4. mass

A student has four balls - table tennis ball, tennis ball, cricket ball and a football. The correct ascending order of inertia is :

1. table tennis ball, tennis ball, football, cricket ball
2. cricket ball, football, tennis ball, table tennis ball
3. table tennis ball, football, cricket ball, tennis ball
4. football, cricket ball, table tennis ball, tennis ball