Advertisements
Advertisements
प्रश्न
In addition to speed, what else should we know to predict the position of a moving body ?
उत्तर
Besides speed, we should know the direction to predict the position of a moving body.
APPEARS IN
संबंधित प्रश्न
Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.
What is the SI unit of retardation ?
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed.
Which of the following statement is correct regarding velocity and speed of a moving body?
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:
Give an example of motion in which the average speed is not zero but the average velocity is zero.
A car travels the first 30 km with a uniform speed of 60 km h-1 and the next 30 km with a uniform speed of 40 km h-1. Calculate :
The total time of journey,
The average speed of the car.
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.
A body projected vertically up with a velocity of 10 m/s reaches a height of 20 m. If it is projected with a velocity of 20 m/s, then the maximum height reached by the body is:
