Question
Choose the one alternative that best completes the statement or answer the question. Impulse involves the time that a force acts Whereas work involves the distance that a force acts time and distance that a force acts acceleration that a force produces. Which of the following it not a vector quantity? speed velocity acceleration all are vector quantities none are vector quantities. A feather and a coin dropped In a vacuum fall with equal A 5000-kg freight car moving at 2 m/s collides with a 10,000-kg freight car at rest. They couple upon collision and move away as 1 m/s. 1/3 m/s 2 m/s. 2/3 m/s. The mass of a lamb that weights 110 N is about 110 kg. 11 kg. 1100 kg. 1 kg, none of the above A Made truck and a Volkswagen traveling at the same speed have a head-on collision. The vehicle that undergoes the greatest change In velocity will be the Volkswagen Mack truck. same for both. Recoil is noticeable if we throw a heavy ball while standing on roller skates. If instead we go through the motions of throwing the ball but hold onto it our net recoil will be small, but noticeable. zero. the same as before.
Explanation / Answer
1. (A)
2. (A)
3. (C)
4. (D)
5. (B)
6. (C)
7. (C)