A Particle Moves East at Constant Velocity for a Time

question 22

Multiple Choice

A particle moves east at constant velocity for a time interval DT.It then moves north at a constant velocity,with the same speed as before,for another time interval DT.Finally it moves east again with the original velocity.At the instant an additional time interval DT 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 and the average acceleration is zero.
• B)The average velocity is and the average acceleration is not zero.
• C)The average velocity is not and the average acceleration is zero.
• D)The average velocity is not and the average acceleration is not zero.

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