Advertisements
Advertisements
प्रश्न
Give an example of motion in which the average speed is not zero but the average velocity is zero.
Advertisements
उत्तर
If a body starts its motion from a point and comes back to the same point after a certain time, then the displacement is zero, average velocity is also zero, but the total distance travelled is not zero, and therefore, the average speed in not zero.
APPEARS IN
संबंधित प्रश्न
What is the Differnece between speed and velocity ?
If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.
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’ ?
Convert a speed of 54 km/h into m/s.
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is velocity of the car?
Figure shows the displacement of a body at different times .
Calculate the velocity of the body as it moves for time interval :
(i) 0 to 5 s,
(ii) 5 s to 7 s
(iii) 7 s to 9 s.
The velocity-time graph of a moving body is given below in Figure
Displacement in each part AB, BC and CD.
Define speed of a body.
Which of the following figures (Fig. 8.3) represents uniform motion of a moving object correctly?
