Question

conclusion:

1. what is happening at the very beginning of the graph when you first turn on the car? what shape on the graph shows this? its getting ready to accelerate. on the graph its going straight.
2. what happens at the end of the graph when the car hits the wall? what shape on the graph shows this? it stops for a second then it starts trying to climb up the wall. on the graph we see it go straight then starts curving up.
3. how does your new velocity compare to the ones you got before? is it bigger or smaller? why do you think you got a different answer now? no it doesnt compare because on the ones i got before it starts at zero and on the new one it starts at 2.5. i think i got a different answer because before i didnt know the graphing points but now i do.
4. do you think it is possible for any object to start traveling at a constant velocity instantly when you turn it on or make it go? why or why not?

Explanation:

1. When the car is first turned on, it is in a state of preparing to accelerate, which is shown as a straight - line segment on the graph indicating a period of no - motion or constant initial state.
2. When the car hits the wall, it stops briefly and then attempts to climb the wall. The graph shows a straight - line for the stop and then a curving - up shape for the upward attempt.
3. The new velocity starts at 2.5 while previous ones started at 0, so they are not comparable. The difference in answers is due to new knowledge of graphing points.
4. It is not possible for an object to start traveling at a constant velocity instantly. According to Newton's first law, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. To change from rest to a constant velocity, an unbalanced force must act over a non - zero time interval to cause acceleration first.

Answer:

1. The car is preparing to accelerate, shown as a straight - line on the graph.
2. The car stops briefly and then tries to climb the wall, shown as a straight - line followed by a curving - up shape on the graph.
3. The new velocity and previous ones are not comparable as the new one starts at 2.5 and previous ones at 0. The difference is due to new knowledge of graphing points.
4. No, because according to Newton's first law, an unbalanced force must act over time to change from rest to a constant velocity.