A student measures the time taken for 20 swings of a pendulum. He finds that the time taken is 46 seconds.
What time does the pendulum take for one swing?
b How could the student have found the time for one
swing more accurately?​

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.