manspn sep

G10, Physics First Semester Test Time Allowed (45)minutes
Answer All Questions

1. Fill in the blanks. (5 marks)
   (1) The value of grav magnitude of ………. unit.
   (3) Since displacement has both ………. and direction, displacement is a vector quantity.
   (4) 1 N force acting horizontally on a body of mass 1 kg gives it an acceleration of ……… .
   (5) The unit of work in British system is ………. .
2. Define “work”? A child 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.Define the coefficient of volume expansion. A heat resistance glass at 15℃ is fully filled
   with 250 cm3 of glycerine. If the 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-ibe Newton’s second law in symbols as F α a?.
   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.