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Homework Statement
A car is moving with speed ##17.4m/s## due south at one moment and ##28.3m/s## due east ##7.50s## later.
A. Determine the magnitude and direction of its average velocity over this time interval.
B. Determine the magnitude and direction of its average acceleration over this time interval.
C. What is its average speed over this time interval?
The attempt at a solution
I'm not at all sure that there's enough information here to determine any of these. From the information given, would be it wise to assume that the car had been traveling at ##17.4m/s## due south for a period of ##7.50s## and then switched velocities at ##t=7.50s##, or should I assume that at some point within those ##7.50s## the car's velocity changed (perhaps gradually), and ##28.3m/s## due east is its final recorded instantaneous velocity?
I'm assuming that if I can find the magnitudes for the ##x## and ##y## components (or in this case, South and East components) I can solve most, if not all of the questions, but what are ##Vx## and ##Vy##? How does the time factor into this?
Thank you,