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Can the speed of a body be negative? - Physics

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प्रश्न

Can the speed of a body be negative?

एक पंक्ति में उत्तर
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उत्तर

No the speed of a body cannot be negative.

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अध्याय 2: Motion in One Dimension - Exercise 2 [पृष्ठ ८०]

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फ्रैंक Physics [English] Class 9 ICSE
अध्याय 2 Motion in One Dimension
Exercise 2 | Q 33 | पृष्ठ ८०

संबंधित प्रश्न

Arrange the following speeds in the increasing order:
(i) A bicycle moving with a speed of 36 km/h.
(ii) A car moving with a speed of 2 km/min.
(iii) An athlete running with a speed of 7 m/s.


Does uniform speed mean constant speed?


A car travels from P to Q at a uniform speed of 20 ms-1 and immediately turns back and travels towards Q with a uniform speed of 30 ms-1. What is the average speed for the whole journey?


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?


A girl had designed a clap switch for a science exhibition that enabled her to switch on or off an alarm just with clapping of hands. While testing her device in a hall, she noticed that once the alarm has sounded it followed with another one due to echo of the clap, that is, the sound reflected by the walls. She recorded the two soundings of alarm with her tape recorder and found out that time difference in between them is 0.1 s. If the distance of the walls be 15 m, calculate the speed of sound.


Suppose a boy is enjoying a ride on a merry go round which is moving with a constant speed of 10 m/s. It implies that the boy is


The speed of a train is expressed in m/h.


The correct symbol to represent the speed of an object is ______.


If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels at a higher speed?


Distinguish between speed and velocity.


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