1. 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   2. The acceleration due to gravity on the Earth's surface is   0.98 m/s2   9.8 m/s2   98 m/s2   980 m/s2   Half-n-half Clue   3. If velocity is measured in meters per second and time in seconds, then the units of acceleration are   meter / second   second2 / meter   meter / second2   second / meter   Half-n-half Clue   4. Which of the following quantities is a scalar?   velocity   speed   acceleration   force   Half-n-half Clue   5. A scalar is a quantity which has both magnitude and direction.   True   False   6. If an object moves through equal distances in equal times, then it is moving at a constant _______.   speed   acceleration   velocity   displacement   Half-n-half Clue   7. Consider the graph of distance (in m) vs. time (in s) given above. After 8 seconds, the object has traveled a distance of   100 m   110 m   20 m   160 m   Half-n-half Clue