1. If an object starts from rest and attains a velocity of 25 feet per second after 5 seconds, then its acceleration in feet per second2 is   5   125   625   None of these   Hint Half-n-half Clue   2. If velocity is measured in meters per second and time in seconds, then the units of acceleration are   meter / second   meter / second2   second2 / meter   second / meter   Half-n-half Clue   3. Consider the graph of velocity (in m/s) vs. time (in s) given above. During the last 2 seconds, the object   reduces its velocity from 10 m/s to zero.   is constantly decelerating at 10 m/s2.   is constantly accelerating at 10 m/s2.   covers a distance of 10 m.   Half-n-half Clue   4. If displacement is measured in meters and time in seconds, then the units of velocity are   second / meter   meter / second2   second2 / meter   meter / second   Half-n-half Clue   5. 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   100 m   160 m   20 m   110 m   Half-n-half Clue   6. The rate of change of velocity is called   momentum   acceleration   force   speed   Half-n-half Clue   7. A scalar is a quantity which has both magnitude and direction.   True   False