Advertisements
Advertisements
प्रश्न
If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.
Advertisements
उत्तर
Distance (d) = 100 m
Time (t) = 9.83 s
So, we can calculate the speed as :
`"Average speed" = "Total distance travelled"/"Time"`
Average speed for the entire journey :
= `100/9.83`
= 10.173 m/s
Now , we can convert it in km/h as :
= `((10.173)(3600))/1000`
= 36.62 km/hr
APPEARS IN
संबंधित प्रश्न
Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
Abdul, while driving to school, computes the average speed for his trip to be 20 km h−1. On his return trip along the same route, there is less traffic and the average speed is 30 km h−1. What is the average speed for Abdul’s trip?
Change the speed of 6 m/s into km/h.
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft’s altitude, how long will it take to reach the ‘sound barrier’ ?
One of the following is not a vector quantity. This one is :
When is a body said to be in motion?
Which of the quantity-velocity or acceleration-determines the direction of motion?
Express 15 m s-1 in km h-1.
Define speed of a body.
