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प्रश्न
Every object moves with a constant speed.
विकल्प
True
False
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उत्तर
This statement is False.
Explanation:
Objects do not always move with a constant speed; their speed can change due to acceleration or deceleration.
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संबंधित प्रश्न
Convert 20 m/s into km/hr.
Which is greater?
(i) 36 km/hr
(ii) 8.5 m/s
Is the average speed during different time intervals for a uniform motion the same or different?
A girl had designed a clap switch for a science exhibition that enabled her to switch on or off an alarm just with clapping of hands. While testing her device in a hall, she noticed that once the alarm has sounded it followed with another one due to echo of the clap, that is, the sound reflected by the walls. She recorded the two soundings of alarm with her tape recorder and found out that time difference in between them is 0.1 s. If the distance of the walls be 15 m, calculate the speed of sound.
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A bus travels 54 km in 90 minutes. The speed of the bus is ______.
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A bus travels, a distance of 20 km from Chennai central to the airport in 45 minutes. What is the average speed?
In a 100m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ______.
A car starting from rest moves with a uniform acceleration of 0.2 ms-2 for 3 min. Find the
- speed acquired
- the distance traveled.
