Hi I have a take-home test that I don\'t know two answers of them: If two balls

Question

Hi I have a take-home test that I don't know two answers of them:

If two balls are thrown from the same cliff with the same speed, one up, one down, when they touch the ground, they should:

                                          a. have different speed                                                  
                                          b. the same speed                                                  
                                          c. touch the ground in the same time                                                  
                                          d. travel the same distance in the air                                                  
                                          e. none of above                                                  

Explanation / Answer

1) b. the same speed

2) a. they should touch the ground at the same time

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