please answer questions 1 and 2 and show working please. DI Questiond 10.5 pts A

Question

please answer questions 1 and 2 and show working please.

DI Questiond 10.5 pts An object object travels 25 meters in the +x direction for 3.0 seconds, and then immediately travels some distance in the -x direction. After a total time of 8.5 seconds, the object's average velocity is 0 m/s. What distance did the object travel in the -x direction? 10.5 pts An object object travels 39 meters in the +x direction for 2.3 seconds, and then immediately travels some distance in the-x direction. After a total time of 7.3 seconds, the object's average velocity is 0 m/s, what is the average velocity for the second part of the trip (traveling in the-x directi in m/s? If in the negative x direction, indicate so with a negative sign D Question 3 10.5 pts

Explanation / Answer

1) Average velocity is displacement divided by time. In order for the average velocity to be zero, displacement has to be zero means if the object returns back from where it started.

This means if an object travels 25 m in + x direction then for displacement to be zero, it must travel 25 m in - x direction.

Therefore, object travelled for 25 m in - x direction

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2) average velocity for first part = 39 - 0 / 2.3 - 0 = 16.95 m/s

Now the total time taken is 7.3 sec

so, time for second part is 7.3 - 2.3 = 5 sec

Therefore,

average velocity = 0 - 39 / 5 =

average velocity = - 7.8 m/s

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