Which of the following graphs applies to each situation? Each graph shows the be

Question

Which of the following graphs applies to each situation? Each graph shows the behaviour of two objects: east is in the direction of positive d. (E.g., if graph A applies to situation 1, and C to the rest, enter ACCCCC) 1) An upward moving elevator colliding with a downward moving elevator. 2) A jogger overtaking a walker. 3) A car, initially at rest, accelerating and a car moving initially at constant speed applying the brakes until it stops. 4) An initially moving truck speeding up eastward and a westward moving truck slowing down. 5) A train, initially moving at a steady speed, has brakes applied to match the speed of a train on a parallel track. 6) An eastward moving truck applying the brakes and a westward moving truck speeding up. FBJCDH

Explanation / Answer

1. velocity positive for upward moving and negative for downward then after colliding become zero. so option is F

2. joggers slope is higher than walker B

3. it is clear voption A is correct

4. slope positive for east moving truck and the increasing and for west moving truck slope decreasing so option C

5. at last slope must be same. D

6. just opposite to part 4. H

so answer is FBACDH

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