in #sdp4 years ago

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.

  1. 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 )

  2. 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 )

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” . 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 )

  2. (a) Define speed and vel (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 →

  1. (a) State law of conservation of momentum. ( 4 marks )
    A 30g bullet moving at a constant velocity hits a wooden block of mass 3kg and continues
    to travel at the velocity of 2 ms-1 together with the block. What is the velocity of the bullet
    when it hits the block?
    (b)A 0.2kg marble is at rest on a smooth table. Another marble of mass 0.1 kg moving at
    a constant velocity of 10 ms-1 towards the east hits this marble and it recoils to the west
    with the velocity of 5ms-1. Find the velocity of the marble which was at rest? ( 4 marks )

  2. (a) In order to weight a body in the laboratory, a uniform plank of wood AB 3 m long and
    having a mass of 8kg is pivoted about a point 0.5 m from A. The boy stands 0.3m from A
    and a mass of 2 kg is placed 0.5m from B in order to balance the


Congratulations @thurrein! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :

Award for the number of posts published

Click on the badge to view your Board of Honor.
If you no longer want to receive notifications, reply to this comment with the word STOP

Support SteemitBoard's project! Vote for its witness and get one more award!

You got a 4.17% upvote from @postpromoter courtesy of @thurrein!

Want to promote your posts too? Check out the Steem Bot Tracker website for more info. If you would like to support the development of @postpromoter and the bot tracker please vote for @yabapmatt for witness!

Coin Marketplace

STEEM 0.21
TRX 0.06
JST 0.026
BTC 18875.85
ETH 1010.36
USDT 1.00
SBD 2.83