A particle moves east at constant velocity v r for a time interval T. It then mo

Question

A particle moves east at constant velocity v r for a time interval T. It then moves north at a constant velocity, with the same speed as before, for another time interval T. Finally it moves east again with the original velocity. At the instant an additional time interval T has elapsed, which of the following are true about the average velocity and the average acceleration for the motion described?

a. The average velocity is v
r
and the average acceleration is zero.
b. The average velocity is v
r
and the average acceleration is not zero.
c. The average velocity is not v
r
and the average acceleration is zero.
d. The average velocity is not v
r
and the average acceleration is not zero.

Explanation / Answer

displacement = 2.236 * VT

svg ve;ocity = 2.236*VT / (3T) = 0.745 V

avg accelration = 0

OPTION C

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