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1.Write True or False. (4- marks )
(a) Mass cannot is at 0.5 x102 cm mark for a uniform metre rule.

1. Fill in the blanks. (4- marks )
   (a) Displacement is defined as the distance travelled along a _____ direction.
   (b) Energy is the _____ to do work.
   (c) The normal temperature is _____ ℉.
   (d) The ice point is 0℃ in celsius scale and _____ K in kelvin scale.

2. In the equation s =v0t + 1/2at2 ,s,v0 and a are magnitudes of the respective vector quantities.
   Write down the equation in vector form.
   A vector of magnitude 5 units is inclined at an angle 37° to the x axis . Find the magnitudes
   of the vector components along x and y axis. ( 5- marks )

3. Which of the following quantities are scalars and which are vectors?
   (a) speed (b) velocity (c) average velocity (d) acceleration (e) displacement.
   A particle starting from rest moves along a straight line with a constant acceleration of 2 ms-2.
   What is the velocity of the particle 9 s after it started from rest? ( 5- marks )

SECTION (B)
Answer ALL Questions
Answer any FOUR Questions

1. (a) Is work a vector or scalar? Define “energy”. A wooden sphere of mass 0.15 kg is thrown
   with a velocity of 30 ms-1 .Find the kinetic energy of the sphere. (4-marks )
   (b) Define “work” .
2. (a) Define speed and velocity such that the two may be distinguished. An object moves with
   an initial velocity of 4ms-1 . If it moves with a uniform acceleration of 2ms-2 find the
   displacement after 20 s. (4-marks )
   (b) A body moving with a constant acceleration reach the velocity 4ms-1 after 10s. If the
   body start from rest , find the velocity after (a) 12s (b) 14s (c) 16s (d) 18s. Draw the
   velocity time graph for the interval 10 s to 18 s. From the graph , find the velocities at
   8s and 20s. (4marks )
   P.T.O →