Question

A particle moves in the direction of east for $2s$ with velocity of $15m{s}^{-1}$.Then it moves towards north for $8s$ with a velocity of $5m{s}^{-1}$. The average velocity of the particle is (in $m{s}^{-1}$)

• A. $1$
• B. $5$
• C. $7$
• D. $10$

Answer 1

Answer: (B)

$5$

$V_{avg}=\frac{TotalDisplacement}{Totaltime}$

$V_{avg}=\frac{50}{10}=5m/s$