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प्रश्न
Define velocity. What is the SI unit of velocity ?
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उत्तर
Velocity of a body is the distance travelled by it per unit time in a given direction. SI unit of velocity is m/s. It is a vector quantity .
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संबंधित प्रश्न
Name the physical quantity whose SI unit is :
(a) m/s (b) m/s2
What conclusion can you draw about the velocity of a body from the displacement-time graph shown below :
Fill in the following blank with suitable word :
If a body moves with uniform velocity, its acceleration is ..............
Describe the motion of a body which is accelerating at a constant rate of 10 m s–2. If the body starts from rest, how much distance will it cover in 2 s ?
A train travelling at 20 m s-1 accelerates at 0.5 m s-2 for 30 s. How far will it travel in this time ?
Define velocity. State its unit.
What do you understand by the term acceleration?
How can you find the following?
Acceleration from velocity – time graph.
A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
A girl walks along a straight path to drop a letter in the letterbox and comes back to her initial position. Her displacement–time graph is shown in Fig.8.4. Plot a velocity-time graph for the same.
