1. Acceleration can be negative.   True   False   2. A scalar is a quantity which has both magnitude and direction.   True   False   3. 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   Hint Half-n-half Clue   4. Consider the graph of distance (in m) vs. time (in s) given above. After 8 seconds, the object has traveled a distance of   110 m   100 m   160 m   20 m   Half-n-half Clue   5. If an object starts from rest and attains a velocity of 30 feet per second after 6 seconds, then its acceleration in feet per second2 is   5   180   1080   None of these   Half-n-half Clue   6. Consider the graph of velocity (in m/s) vs. time (in s) given above. In the first 8 seconds, the object has traveled a distance of   160 m   20 m   110 m   100 m   Half-n-half Clue   7. The rate of change of velocity is called   speed   acceleration   momentum   force   Half-n-half Clue