Advertisements
Advertisements
प्रश्न
Define average velocity and give one example.
Advertisements
उत्तर
The ratio of the total distance travelled in a specified direction to the total time taken by the body to travel the distance is called average velocity.
Example: If you walk to a campsite 1 km away and then back to your starting point within 1 hour, then your average velocity will be zero because your initial and final position is the same.
APPEARS IN
संबंधित प्रश्न
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
Write the formula to calculate the speed of a body moving along a circular path. Give the meaning of each symbol which occurs in it.
What do you mean by motion in one direction?
Give one example of following motion :
Variable velocity
The diagram below shows the pattern of the oil on the road at a constant rate from a moving car. What information do you get from it about the motion of the car.

For the motion with uniform velocity , how is the distance travelled related to the time ?
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.

A train is moving with a velocity of 90 km h-1 . It is brought to stop by applying the brakes which produce a retardation of 0.5 ms-2 Find :
(i) The velocity after 10 s , and
(ii) the time taken by the train to come to rest .
What is the relation between distance and time when the body is moving with variable velocity?
Which of the following figures (Fig. 8.3) represents uniform motion of a moving object correctly?
