A car runs at a constant speed on a circular track of radius $100\,m$ , taking $62.8\,sec$ for every circular lap. The average velocity and average speed for each circular lap respectively is
$10\, m/s,0\, m/s$
$0 \,m/s ,0\, m/s$
$0 \,m/s ,10 \,m/s$
$10\,m/s,10 \,m/s$
A car travels the first half of a distance between two places at a speed of $30\, km/hr$ and the second half of the distance at $50 \,km/hr$. The average speed of the car for the whole journey is..........$km/hr$
A man walks on a straight road from his home to a market $2.5\; km$ away with a speed of $5 \;km h ^{-1} .$ Finding the market closed, he instantly turns and walks back home with a speed of $7.5 \;km h ^{-1} .$ What is the average speed of the man over the interval of time $0$ to $40\; min$ ?
Write relation between speed and magnitude of velocity.
A vehicle travels $4\,km$ with speed of $3\,km / h$ and another $4\,km$ with speed of $5\,km / h$, then its average speed is $..........km/h$
A body covers first one-third of the distance with a velocity $20\, ms^{-1}$, the second one-third with a velocity of $30\, ms^{-1}$ and last one-third with a velocity of $40\, ms^{-1}$. The average velocity is nearly........$m/s$