Advertisements
Advertisements
प्रश्न
Define Speed.
Advertisements
उत्तर
The distance covered by a body in a unit time is called its speed. It is also defined as the rate of change position of a body in any direction.
Speed = distance/time
APPEARS IN
संबंधित प्रश्न
A boy covers half of his journey with a uniform speed of u and the other half with a uniform speed of v. What is the average speed for the whole journey?
Can the speed of a body be negative?
Is the average speed during different time intervals for a uniform motion the same or different?
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?
In figure the position of a body times is shown . Calculate the speed of the body as it moves from 0 to A, A to B, B to C and i ts average speed .
The speed of a train is expressed in m/h.
The cheetah the fastest animal among terrestrial animals run with an average speed of ______.
The SI unit of speed is a kilometer.
Which of the quantities have the same SI unit?
In a 100m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ______.
