Advertisements
Advertisements
प्रश्न
Under which condition is the magnitude of average velocity equal to average speed ?
Advertisements
उत्तर
The magnitude of average velocity is equal to average speed when an object covers equal distances in equal intervals of time in a particular direction.
APPEARS IN
संबंधित प्रश्न
What does the odometer of an automobile measure?
What name is given to the speed in a specified direction ?
Arrange the following speed in increasing order (keeping the least speed first):
A bicycle moving with a speed of 200 m/min.
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How far does it travel in 6 seconds ?
A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. Calculate the speed acquired and the distance travelled in this time.
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.
Give one example of following motion :
Variable velocity
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.
