A box is pushed 7 m to the left in 3 s. What is the block's average speed to the nearest tenth?

2.33 m/s
0.43 m/s
2.3 m/s
0.4 m/s

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.