Question

A person walks from point p to point qalong a straight road in 10 minutes then turns back and returns to point r which is Midway between p and q after for the four minutes. in PQ is 1 km find the average speed and velocity of the person in going from p to r

Answer 1

$total \: displacement = 0.5km \\ total \: time \: = \frac{7}{30} \\ \\ as \: we \: know \: that \: average \: \\ velocity \: is \: the \: ratio \: of \: total \\ displacement \: with \: total \: time \\ \\ \\ than \: average \: velocity \: = \frac{0.5}{ \frac{7}{30} } \\ \: \: \: \: \: \: \: \: \: \: \: = \frac{15}{7}$

THERE IS YOUR ANSWER....

$average \: speed \: is \: the \: ratio \: of \: total \\ distance \: with \: total \: time \\ \\ total \: distance = 1.5km \\ total \: time = \frac{7}{30} \\ \\ average \: speed = \frac{1.5}{ \frac{7}{30} } \\ \\ = \frac{65}{7}$

HOPE IT'S HELP YOU...

Answer 2

Explanation:

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