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प्रश्न
Define velocity. State its unit.
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उत्तर
The velocity of a body is the distance travelled per second by the body in a specified direction.
Its SI unit is metre/second (m/s).
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संबंधित प्रश्न
Fill in the following blank with suitable word :
Velocity is the rate of change of……………………… It is measured in.............. .
Explain the meaning of the following equation of motion :v = u + at, where symbols have their usual meanings.
A freely falling object travels 4.9 m in 1st second, 14.7 m in 2 nd second, 24.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of :
The slope of a speed-time graph gives:
Give one example of following motion :
Variable acceleration
For a uniformly retarded motion, the velocity-time graph is _____________
Write three equations of uniformly accelerated motion relating the initial velocity (u), final velocity (v), time (t), acceleration (a) and displacement (S).
Multiple choice Question. Select the correct option.
The speed of a car reduces from 15 m/s to 5 m/s over a displacement of 10 m. The uniform acceleration of the car is :
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?
An object starting from rest travels 20 m in the first 2 s and 160 m in the next 4 s. What will be the velocity after 7 s from the start?
