1. "A body continues in its state of rest or uniform motion in a straight line unless acted upon by a force" is a statement of   Newton's second law of motion   Newton's law of gravitation   Newton's first law of motion   Newton's third law of motion   Hint Half-n-half Clue   2. A mass of 9 kg moves at 3 m/s. Its momentum is   90 kg m/s2   27 N s   90 N s   27 kg m/s2   Half-n-half Clue   3. One newton approximately equals the force of gravity acting on an object of 1000 grams.   True   False   4. Force is defined as   mass × acceleration   mass / volume   pressure / area   mass × velocity   Half-n-half Clue   5. If an object of mass 9 kg starts from rest and attains a velocity of 28 m/s after 7 s, then the force acting on it is   4 N   196 N   63 N   36 N   Half-n-half Clue   6. An object is moving in a circular path. The force acting on the object towards the center of the circle is called the   centripetal force   centrifugal force   magnetic force   gravitational force   Half-n-half Clue   7. The SI unit of force is   pascal   joule   dyne   newton   Half-n-half Clue