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प्रश्न
What do you understand by the average speed of a body?
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उत्तर
Average speed of a body can be defined as ratio of total distance covered by a body In total time.
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संबंधित प्रश्न
Suppose the two photographs, shown in Figure 1 and Figure 2, had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the fastest car.
Figure 1 Vehicles moving in the same direction on a road
Figure 2 Position of vehicles shown in Figure 1 after some time
When is instantaneous speed the same as the average speed?
______ is a scalar quantity.
Do speed and average speed of a body have the same meaning?
The average time taken by a normal person to react to an emergency is one fifteenth of a second and is called the 'reaction time'. If a bus is moving with a velocity of 60 km/h and its driver sees a child running across the road, how much distance would the bus had moved before he could press the brakes? The reaction time of the people increases when they are intoxicated. How much distance had the bus moved if the reaction time of the driver were 1/2 s under the influence of alcohol?
Vehicles moving with varying speeds are said to be in uniform motion.
Distances between two cities are measured in kilometres.
The speed of a train is expressed in m/h.
A ______ is the fastest land animal.
Distinguish between speed and velocity.
