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 path of an object look like when it is in uniform motion?
What do the following measure in a car ?
(a) Speedometer (b) Odometer
Arrange the following speed in increasing order (keeping the least speed first
A scooter moving with a speed of 30 km/h.
If a bus travelling at 20 m/s is subjected to a steady deceleration of 5 m/s2, how long will it take to come to rest ?
The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
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 statement is correct regarding velocity and speed of a moving body?
Arrange the following speeds in increasing order.
10 m s-1, 1 km min-1 and 18 km h-1.
Define variable velocity and give one example.
