1. One newton approximately equals the force of gravity acting on an object of 1000 grams.   True   False   2. The moon remains in its orbit around the earth due to the _______ forces between the two bodies.   gravitational   electrostatic   frictional   magnetic   Hint Half-n-half Clue   3. The approximate weight (on Earth) of a mass of 4 kg is   400 N   0.4 N   4000 N   40 N   Half-n-half Clue   4. Which is the odd one out?   speed   momentum   density   mass   Half-n-half Clue   5. Momentum is defined as   mass × velocity   mass × acceleration   mass × velocity2   force × distance   Half-n-half Clue   6. A mass of 9 kg moves at 5 m/s. Its momentum is   90 kg m/s2   90 N s   45 kg m/s2   45 N s   Half-n-half Clue   7. An object will weigh more at the poles than at the equator.   True   False