ارجو المساعده في حل الفيزياء ....

[LoOi]

مساء/ صباح الخير
انا ولله مني فاهمه شي في الفيزياء .... ارجو المساعده في حل الواجب
بسرعه لو سمحتو عشان هي تبيه بكره ضروري ...

an automobile travels on a straight road for 40 km at 30 km\h .It then continues in the same direction for another 40 km at 60 km\h.

A )What is the average velocity of the car during this 80 km trip?(Assume that it moves in the positive x direction )

B) What is the average speed ?

C) Graph x versus t and indicate how the average velocity is found on the graph. ssm www

وشكراً