msinsl h7
The maximum value of the resultant of two vectors acting at a point occurs when they are in
………. directions.
- If the sum of the vectors is zero, the two vectors have same magnitude and ………
directions.
11.Quantities that have only ………. are called scalars. - A ……… has both magnitude and direction.
- The change in position along a certain direction is called ……… .
- Force is a ……… quantity.
- Mass is a …….. quantity.
- The combined effect of two (or) more vectors is called …….. .
- The vector sum of two vectors is called ……… vector.
18.The process of sub-dividing into two or more vectors is called
Answer ALL questions. (12 marks)
(a) Express the value of G in the CGS units. (G = 6.67 x 1011 m3 kg-1 s -2)
(b)A car is travelling with a constant velocity of 6 m s-1. The driver applies the breaks as he sees
a cow which is at a distance of 24 m from the car. Find the acceleration of the car if it stops
just in front of the cow.
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