lsodp by wonyan

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edu · @wonyan ·
$0.19
lsodp
G10, Physics              First Semester Test                      Time Allowed (45)minutes
Answer All Questions
1. Fill in the blanks. (5 marks)
  (1) The unit of gravitational constant is ………. .
  (2) A unit vector hld pulling a toy car with a 10N force. The direction of the force makes an 
    angle of 20° with the horizontal plane. If the car moves 6 m, how much work does the child do?
3.Express the units of area ehe temperature increase to 25 ℃ how much glycerine  overflows?          The 
    coefficient   of volume   expansion of    glycerine  is 5.1 x 10-4K-1    and that    of heat  resistance glass    is 
    0.09 x 10-4K-1.
4. A 30 g bullet moving at a constant velocity hits a wooden block of mass 3 kg and continues to travel
    at a velocity of 2 ms-1 together with the block.What is the velocity of the bullet when it hits the block?
5. Rewrite the relation  m (v-v_0)/t αF in vector notation. A 3 ton car moving with the velocity of 30 mi h-1 is 
    brought to stop in 2 s. Find the resisting force of the brakes acting on the car.
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vote details (332)
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