1.Write True or False. (4- marks )
(a) Mass cannot be change by the location , shape and speed of the body.
(b) Different vector quantities like velocity and force cannot be added.
(c) Linear motion has only one direction.
(c) The centre of gravity is at 0.5 x102 cm mark for a uniform metre rule.
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.
In the equation s =v0t + 1/2at2 ,s,v0 and a are magnitudes of the respective vector quantities.
Write down the equation in vectd y axis. ( 5- marks )
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 Quehe kinetic energy of the sphere. (4-marks )
(b) Define “work” . Write down the unit of work in SI system. A woman push a child, who is
riding a tricycle, with a 200N force. The tricycle moves a distance of 2m and the work done
by the woman is 100J. Find the angle between the force and the displacement. (4-marks )
