Relative motion means a motion relative to a reference point. We can also say, relative motion means motion referred or observed from a reference point.
For example, Alex is in a train and Ace is at the station, when the train starts moving, for Ace it is moving at a speed of 10 m/s, but for Alex it is moving at 0 m/s, or we can say that it is at rest for Alex, but in motion for Ace. This is relative motion.
The answer is D light rays shine on an object which then reflects back to our retina
Answer:
1. 8.0kg * m/s
2. The same as before the collision
3. The force will decrease
4. 14 m/s
