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प्रश्न
What does the odometer of an automobile measure?
उत्तर
An automobile's odometer tracks the vehicle's miles traveled.
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संबंधित प्रश्न
In addition to speed, what else should we know to predict the position of a moving body ?
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.
A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows :
Time (s) : 0 2 4 6 8 10
Speed (m/s) : 4 8 12 16 20 24
Draw the speed-time graph by choosing a convenient scale. From this graph :
(1) Calculate the acceleration of the car.
(2) Calculate the distance travelled by the car in 10 seconds.
Which of the following can sometimes be 'zero' for a moving body?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement
Give one example of following motion :
Uniform velocity
A car is moving in a straight line with speed 18 km h-1. It is stopped in 5 s by applying the brakes. Find:
- the speed of car in m s-1
- the retardation and
- the speed of car after 2 s of applying the brakes.
Figure shows the displacement of a body at different times .
Calculate the average velocity during the time interval 5 s to 9 s ,
[Hint : From 5 s to 9 s , displacement = 7 m - 3m = 4m]
The velocity-time graph of a moving body is given below in Figure
Total displacement.
A speeding car changes its velocity from 108 kmh−1 to 36 kmh−1 in 4 s. Calculate its deceleration in
- ms−2
- kmh−2.
Give two examples of uniform circular motion from your daily life.
