Kinematics problem-finding total distance

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A particle moving at 5 m/s reverses direction in 1 second, maintaining a constant acceleration. The problem requires calculating the total distance traveled rather than just displacement. The initial attempt at solving the problem incorrectly calculated the distance as zero, highlighting confusion between distance and displacement. It is clarified that distance is a scalar quantity, while displacement is a vector. Understanding this distinction is crucial for solving kinematics problems accurately.
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Homework Statement


A particle moving at 5 m/s reverses its direction in 1 s to move at 5 m/s in the opposite direction. If its acceleration is constant, what distance does it travel?

A) 1.25 m

B) 2.5 m

C) 5 m

D) 10 m



Homework Equations


d = 1/2 (v0 + v)t


The Attempt at a Solution



Since we need to find d:
d = 1/2 (5 + (-5+)(1)

d = 0

This clearly was off...I was going to see if someone would be able to help me understand this problem better.
 
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You're right. May be they want the total distance traveled instead of the displacement that you correctly calculated.
 
dauto said:
May be they want the total distance traveled instead of the displacement that you correctly calculated.
Yes, distance is a scalar, so generally it means ##\int|\vec v|.dt##. Displacement is a vector, ##\int\vec v.dt##
 
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