The average velocity of a car that travels 450 km north in 9.0 h is 5.0 x 10 km/h
Answer:
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Explanation:
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Answer:
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Explanation:
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The negative sign on the acceleration is only a vector quantity that means the object is accelerating to the left. Hence, we can only focus on it magnitude which is 4 m/s^2. Acceleration is the change in velocity over time. The change in velocity must be 24 m/s - 0 m/s, if you want the object to stop. Therefore,
a = (v2 - v1)/t
4 = (24 - 0)t
t = 6 seconds
The object will stop after 6 seconds.
C.
The particles move perpendicular to the direction of the wave.
