Fill in the following blanks with suitable words :
(a) Work is measured as a product of ....................... and ..................
(b) The work done on a body moving in a circular path is .....................
(c) 1 joule is the work done when a force of one ............. moves an object through a distance of one.................. in the direction of .....................
(d) The ability of a body to do work is called .................... The ability of a body to do work because of its motion is called .................
(e) The sum of the potential and kinetic energies of a body is called ......... energy.
Fill in the following blanks with suitable words:
(a) Displacement is a ...................quantity whereas distance is a ...............quantity.
(b) The physical quantity which gives both, the speed and direction of motion of a body is called its .............
(c) A motorcycle has a steady...........of 3 m/s2. This means that every.............its ......... increases by ..........
(d) Velocity is the rate of change of .............. It is measured in ..............
(e) Acceleration is the rate of change of....................... It is measured in.....................
(a) Parallel rays of light are reflected by a concave mirror to a point called the ___.
(b) The focal length of a concave mirror is the distance from the ___ to the mirror.
(c) A concave mirror ___rays of light whereas a convex mirror___rays of light.
(d) For a convex mirror, parallel rays of light appear to diverge from a point called the___.