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प्रश्न
Give one example of following motion :
Uniform velocity
उत्तर
Example of uniform velocity : A body, once started, moves on a frictionless surface with uniform velocity.
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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?
Abdul, while driving to school, computes the average speed for his trip to be 20 km h−1. On his return trip along the same route, there is less traffic and the average speed is 30 km h−1. What is the average speed for Abdul’s trip?
Under which condition is the magnitude of average velocity equal to average speed ?
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
A snail covers a distance of 100 metres in 50 hours. Calculate the average speed of snail in km/h.
A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.
The graph given alongside shows how the speed of a car changes with time:
(i) What is the initial speed of the car ?
(ii) What is the maximum speed attained by the car ?
(iii) Which part of the graph shows zero acceleration ?
(iv) Which part of the graph shows varying retardation ?
(v) Find the distance travelled in first 8 hours.
Arrange the following speeds in increasing order.
10 m s-1, 1 km min-1 and 18 km h-1.
Define average velocity and give one example.
How many variables are present in each equation of motion?
