1. Consider the graph of velocity (in m/s) vs. time (in s) given above. During the last 2 seconds, the object   is constantly decelerating at 10 m/s2.   reduces its velocity from 10 m/s to zero.   covers a distance of 10 m.   is constantly accelerating at 10 m/s2.   Hint Half-n-half Clue   2. The line segment BC on the velocity vs. time graph given above indicates that the object is constantly accelerating.   True   False   3. A scalar is a quantity which has both magnitude and direction.   True   False   4. Which of the following quantities is a vector?   velocity   time   speed   distance   Half-n-half Clue   5. Acceleration = (change in _______) / (time taken for that change)   speed   velocity   displacement   force   Half-n-half Clue   6. Consider the graph of distance (in m) vs. time (in s) given above. The object's speed during the first 5 seconds is   4 m/s   5 m/s   20 m/s   100 m/s   Half-n-half Clue   7. Which of the following quantities is a scalar?   force   speed   velocity   acceleration   Half-n-half Clue