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Two particles $A$ and $B$ are moving along $x$ -axis. Their $x$ -coordinate versus time graphs are as shown below.
(a) Find the time when the particles start ..."> (a) Find the time when the particles start ...">
Find the velocities of the two particles.

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$v_{A} = 2.5 m / s, v_{B} = 7.5 m / s$

$v_{A} = 3.75 m / s, v_{B} = 2.75 m / s$

$v_{A} = 2.5 m / s, v_{B} = 7.5 m / s$

$v_{A} = 7.5 m / s, v_{B} = 2.5 m / s$

answer is B.

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Detailed Solution

v = slope of x-t graph

$v_{A} = \frac{30 - 10}{8} m / s = 2.5 m / s$

$v_{B} = \frac{30}{8 - 4} m / s = 7.5 m / s$

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