) The rate of change of distance travelled is called _____ .
(17) Uniform motion is motion with _____ velocity.
(18) Any change in velocity gives rise to _____ .
(19) Motion with changing velocity is called _____ motion.
(20) The change in position along a certain direction is _____ .
(21) The slope of the distance -time graph gives _____ .
(22) The grater the slope of a straight line distance-time graph , the _____ is the speed.
(23) The slope of the distance-time graph gives _____ .
(24) The slope of the velocity-time graph gives _____ .
(25) The area under the speed-time graph gives _____.
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1.two 2.changing 3.acceleration 4.zero 5. same
6.zero 7.negative 8.speed 9.zero 10.acceleration
- 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 ……… . - A vector can be represented by an ………. .
- Vectors of ………. kinds may not be added.
- Only vector quantities of ………. kind may be added.
- If D ⃗ =-4C ⃗, the magnitude of D ⃗ is ………. than that of C ⃗.
- If A ⃗, B ⃗ and C ⃗ satisfy the equation A ⃗+B ⃗-C ⃗=0, then C ⃗ is ……… vector of A ⃗and B ⃗.
- The magnitude of the resultant force of a 12 N pointing east and a force of 5 N pointing
south is ……….. N. - A vector of magnitude 100 units is inclined at angle 45° to the X-axis. The magnitude of
X-component is ……… .
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