IX S FA I TEST FACTORISATION ( POLYNOMIAL )

IX TEST FACTORISATION ( POLYNOMIAL )

M.M. 19 + 16                                                                                                                                                                                                                                                                        TIME: 60 MIN

1         [3]Show that (x-3  ) is a factor of 7x² – 19x – 6 

2         [4] Show that x + 1 and 2x – 3 are factors of 2x³ – 9x² + x + 12

3         [2 marks each] Factorize ( i to vi)

i.                     x² + 11x - 30

ii.                    x² - 6x - 55

iii.                  40 + 3x – x²

iv.                  9x² – 22x + 8

v.                   m² + 17mn – 84n²

vi.                  

1.        [3]Define                                                                                                                                             

                 (a)            Velocity

                 (b)            Acceleration

                 (c)            Uniform and Non-Uniform Motion

2.        [2]S I Units of (i) Speed (ii) Velocity (iii) Retardation (iv) time

3.        [2]A car traveling at 20 km/h speeds up to 60 km/h in 6 second. What is its acceleration ?          

4.        [3]Tabulate difference between Distance and Displacement     (At least three.)                                                                                                                             

5.        [1]A body displaces through 30 m eastward and 20 m northward. What is total displacement                                                                              

6.        [2]Define : (i) Latent heat of vaporization  (ii) latent heat of fusion.

7.        [1]When we pour some acetone or petrol on the palm, we get a cooling sensation . Give reason?

8.        [1]Why does steam produce more severe burns on the skin as compared to boiling water ?

9.        [1]  A car is moving with a uniform velocity of 40 km h ^–1. Its acceleration after 1 hour is

(a) 40 km / h²                                 (b) 20 km/ h²

(c) 30 km /h²                                                  (d) zero.

10.     [HOME WORK ]A body covers half the distance with a velocity of 15 m/s and the remaining half with a velocity of 30 m/s. Find the average velocity.