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) Displacement has only magnitude.
(15) Speed is a vector quantity.
(16) Average velocity has only direction.
(17) Acceleration is the rate of change of speed.
(18) Average speed and average velocity have the same unit.
(19) Speed may not be measured in ms-2.
(20) Although speed changes , there is no acceleration.
(21) The speed of a body tell us how far it travels during every unit of time.
(22) The slope of the displacement time graph gives the acceleration of the body .
(23) If the speed changes, the velocity also changes.
(24) The units of speed and velocity are the same.
(25) The area under the speed-time graph gives velocity.
magnitude of the resultant of the force 6 N east and a force of 8 N north is 14 N.

1. When a boy is in motion , there is a change in position.
2. A quantity that has inly magnitude and is called ………… .
3. A scalar is the magnitude of a vector .
4. A vector can be expressed by an arrow.
5. The sum of two (or) more vectors is called vector component.
6. If X ⃗ = -Y ⃗, then X ⃗ and Y ⃗ have the same magnitudes.
7. Distance is a scalar quantity.
8. The sum of two vectors , having unequal magnitudes

Key>>>
1.TRUE 2. FALSE 3. TRUE 4. FALSE 5. FALSE 6. FALSE 7. TRUE 8. FALSE 9. FALSE 10. TRUE 11 TRUE 12. FALSE