1. If an object starts from rest and attains a velocity of 12 feet per second after 3 seconds, then its acceleration in feet per second2 is   4   36   108   None of these   Hint Half-n-half Clue   2. Which of the following quantities is a vector?   time   speed   distance   velocity   Half-n-half Clue   3. If velocity is measured in meters per second and time in seconds, then the units of acceleration are   second / meter   meter / second2   second2 / meter   meter / second   Half-n-half Clue   4. Acceleration = (change in _______) / (time taken for that change)   force   velocity   displacement   speed   Half-n-half Clue   5. Acceleration can be negative.   True   False   6. A bus covers a distance of 60 miles in 2 hours. Its average speed in miles per hour is   3   30   120   None of these   Half-n-half Clue   7. A toy plane moves at a constant speed of 5 m/s. It will travel a distance of 140 m in   28 s   700 s   280 s   None of these   Half-n-half Clue