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प्रश्न
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
उत्तर
The motion of an artificial satellite around the earth is an example of a motion (uniform circular motion) where an object does not change its speed but its direction of motion changes continuously.
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संबंधित प्रश्न
Name the physical quantity which gives us an idea of how slow or fast a body is moving.
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
Arrange the following speed in increasing order (keeping the least speed first):
A bicycle moving with a speed of 200 m/min.
Convert a speed of 54 km/h into m/s.
A ball hits a wall horizontally at 6.0 m s-1. It rebounds horizontally at 4.4 m s-1. The ball is in contact with the wall for 0.040 s. What is the acceleration of the ball ?
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is velocity of the car?
Figure shows the displacement of a body at different times .
Calculate the velocity of the body as it moves for time interval :
(i) 0 to 5 s,
(ii) 5 s to 7 s
(iii) 7 s to 9 s.
Figure shows the displacement of a body at different times .
Calculate the average velocity during the time interval 5 s to 9 s ,
[Hint : From 5 s to 9 s , displacement = 7 m - 3m = 4m]
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
Which of the following figures (Fig. 8.3) represents uniform motion of a moving object correctly?
