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प्रश्न
Name the physical quantity which gives us an idea of how slow or fast a body is moving.
उत्तर
Speed gives an idea of how slow or fast a body is moving.
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संबंधित प्रश्न
Abdul, while driving to school, computes the average speed for his trip to be 20 km h−1. On his return trip along the same route, there is less traffic and the average speed is 30 km h−1. What is the average speed for Abdul’s trip?
In addition to speed, what else should we know to predict the position of a moving body ?
An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft’s altitude, how long will it take to reach the ‘sound barrier’ ?
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
What is its average speed ?
One of the following is not a vector quantity. This one is :
Give one example of following motion :
Uniform velocity
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
Define uniform velocity and give one example.
A speeding car changes its velocity from 108 kmh−1 to 36 kmh−1 in 4 s. Calculate its deceleration in
- ms−2
- kmh−2.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
