Advertisements
Advertisements
Question
A train takes 2 h to reach station B from station A, and then 3 h to return from station B to station A. The distance between the two stations is 200 km. Find:
The average speed,
The average velocity of the train.
Advertisements
Solution
Here, total distance = (200 + 200) km = 400 km
Total time taken = (2 + 3) h = 5 h
(i) Average speed = Total distance travelled/total time taken = `(400 "km")/(5 "h")` = 80 km h-1
(ii) Average velocity of the train is zero because the train stops at the same point from where it starts, i.e. the displacement is zero.
APPEARS IN
RELATED QUESTIONS
What is the Differnece between speed and velocity ?
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which
bus travels faster ?
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
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.
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.
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is velocity of the car?
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
