Advertisements
Advertisements
प्रश्न
The speed of a car is 72 km h-1. Express it in m s-1.
Advertisements
उत्तर
Speed of car = 72 km h-1
Speed of car in ms-1
= `(72 xx 1000)/3600` = 20 m/s
APPEARS IN
संबंधित प्रश्न
Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging?
- from A to B and
- from A to C?
Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.
Under which condition is the magnitude of average velocity equal to average speed ?
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 1 second ?
The speed of a moving object is determined to be 0.06 m/s. This speed is equal to :
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed of the car?
Define variable velocity and give one example.
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.
Which of the following figures (Fig. 8.3) represents uniform motion of a moving object correctly?
