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प्रश्न
Do speed and average speed of a body have the same meaning?
उत्तर
No speed and average speed of a body have different meaning.
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संबंधित प्रश्न
Which is greater?
(i) 36 km/hr
(ii) 8.5 m/s
A body goes from P to Q with a uniform speed of u and immediately returns back to P at a uniform speed of v. What is the average speed for the whole journey?
Can the speed of a body be negative?
Can a body have negative speed?
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.
Compare speed and velocity
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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.
Distinguish between speed and velocity.
