An object travels North at $5 m/s$ for $2 s$ and then travels South at $1 m/s$ for $4 s$ . What are the object's average speed and velocity?

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Answer 1 · 2016-04-28T13:12:46

$"speed="7/3 m/s$
$"velocity="1 m/s$

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$"total distance=AB+CD=10+4=14 meters"$
$"total time=2+4=6 s"$

$"speed="("total displacement")/("total time")$

$"speed="14/6$

$"speed="7/3 m/s$

$"velocity="("displacement")/("total time")$

$"velocity="=6/6$

$"velocity="1 m/s$

An object travels North at 5 m/s 5 m/s for 2 s2 s and then travels South at 1 m/s 1 m/s for 4 s 4 s. What are the object's average speed and velocity?